From Power to Electrical Engineering in the Information Age
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
Since its inception in the late 1800s, electrical engineering has expanded from
its initial focus on electrical circuits for power, telegraphy, and telephone to a
far wider range of fields. But the basic concepts still hold true today: For a
century and a half, electrical engineering has focused on the creation,
transmission, and information of power. The latter theme—the representation,
modification, transmission, and receipt of information using electrical means—
is the focus of this course. This course explains the definition of information,
how engineers measure it, and how it is represented by electrical impulses.
There are many different types of information. When you talk to a buddy, your
brain converts your ideas into motor commands that cause the jaw, tongue, and
lips—all parts of the vocal tract—to move in unison. Your speech must have a
clear, widely recognized structure in order for someone else to interpret the
information that emerges from your ideas. Your friend's ear receives
information from your utterances in the form of sound pressure waves. There,
sound energy is transformed back into cerebral activity, and she will understand
you if your words make sense. Your acquaintance may have listened to your
comments on her stereo once they were recorded on a compact disc (CD) and
mailed to her. You can enter information into your word processor as a text file.
You may email the file to a buddy, who will read it and comprehend it. Even if
the forms of the information representation in sound waves, plastic, and
computer files are very different, all of these circumstances are comparable
from an information theoretic perspective.
Analog and digital are the two categories into which engineers, who are
indifferent to the content of information, divide information. Audio and video
are examples of continuous-valued analog information. Text (such as what you
are reading right now) and DNA sequences are examples of discrete valued
digital information. Energy conversion, also referred to as transduction, is the
process of transforming information-bearing impulses from one energy form
into another. Since some input energy is lost as heat, all conversion systems are
inefficient; nevertheless, this loss does not always imply that the information
being transferred is lost. Although any type of energy might theoretically be
used to represent information, electric signals are particularly well-suited for
manipulation, transmission, and representation of information (signals can be
conveyed over wires or broadcast from antennas) (circuits can be built to reduce
noise and computers can be used to modify information). Therefore, our focus
will be on how to
Electrical signals can be used to represent all types of information, encode
information as voltages, currents, and electromagnetic waves, manipulate
information-bearing electric signals using circuits and computers, and receive
electric signals and transform the information they express back into a form that
can be used.
The first electrical information system was telegraphy, which was invented in
1837. The development of telegraph networks at that time required experience
and intuition because electrical science was primarily empirical. James Clerk
Maxwell2 declared in 1864 that a set of equations he believed regulated all
electrical phenomena marked the emergence of electrical science. According to
these calculations, energy could travel and light was an electromagnetic wave.
The invention of the telephone in 1876 was primarily the result of empirical
labor because of the intricacy of Maxwell's presentation. Maxwell's equations
were widely read after Oliver Heaviside and others simplified them after
Heinrich Hertz verified Maxwell's prediction of what are now known as radio
waves in approximately 1882. This grasp of the basics sped up the development
of the wireless telegraph (1899), the vacuum tube (1905), and radio
transmission, which signaled the real beginning of the communications era.
To be certified and create first-rate designs in the early 20th century, an
electrical engineer had to understand circuit theory and electromagnetic theory.
As a result, the structure and cornerstone of all electrical engineering instruction
was circuit theory. Three "inventions" altered the regulations in the middle of
the century. These included the invention of the transistor (1947), the first
public display of an electronic computer (1946), and the release of Claude
Shannon's A Mathematical Theory of Communication (1948). The information
age, in which digital and analog communication technologies interact and vie
for design preferences, was born out of these inventions, despite their
independent conceptions. The invention of the laser some twenty years later
gave even more design options. As a result, the main emphasis changed from
the circuit theory era of building communication networks to the goals of those
systems. An implementation can only be chosen once the target system has been
specified. The ultimate objective of the system must be kept in mind by the
electrical engineer of today, who must also comprehend the trade-offs between
digital and analog options as well as between hardware and software
configurations while developing information systems.
