Introduction to Computer
francwash
1-IntroductiontoComputers.pptFundamentals of Computer Systems
BBT1111
Lesson Objectives
Define the term, computer
Identify the components
of a computer system
Discuss the information processing cycle
Discuss the advantages and disadvantages of using computers
Recognize the importance of
computer literacy
Define the term, computer
Distinguish between data and information
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
A World of Computers
Today, many activities either involve the use of a computer or depend on information from a computer
Computers are the primary means of communication for billions of people
Customers with businesses
Employers with employees
Students with classmates and teachers
Family members among themselves, and with friends
While communicating, people share text-based messages, pictures, journals, music and videos
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
A World of Computers …contd
Through computers, society has instant access to information:
Local and global news, Weather reports, Sports scores, Airline schedules, Telephone directories, maps and directions, job listings, educational material, course schedules etc
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
A World of Computers …contd
- From the computer, you can
- Make a telephone call, meet new friends, share opinions or life stories, book flights, shop, file taxes, or take a course
- At home, or while on the road, people use computers to
- Manage schedules, pay bills, transfer funds, buy or sell stocks
- Banks place ATMs all over the world, making it easy to deposit or withdraw money
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
A World of Computers …contd
- In retail stores and supermarkets, computers
- Track purchases, generates coupons based on buying patterns
- Vehicles
- Navigational systems, tracking systems
- In the office, computers are used for
- Correspondence (email, chat, video conferencing), sales and inventory management, accounting, etc
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
A World of Computers …contd
- In educational institutions
- Teachers use computers for instruction, students for completing assignments and do research
- People also use computers for leisure
- Playing games, listening to music or radio, watch or compose videos, read books and magazines, share stories, photography etc
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
A World of Computers …contd
- As technology continues to advance, computers are becoming an essential part of life.
- Thus, COMPUTER LITERACY IS VITAL.
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
What is a Computer?
- A computer is an electronic device, operating under the control of instructions (software) stored in its own memory unit, that can accept data (input), manipulate data (process), and produce information (output) from the processing.
- Generally, the term is used to describe a collection of devices that function together as a system.
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
What is computer Literacy
What is computer literacy?
- Knowledge and understanding of computers and their uses
- Computers are everywhere
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
What is a Computer System?
- An integrated collection of various electronic components working together towards a particular goal(s).
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BBT 1111 / BBT1101 /BTM 1101
Printer (output)
Monitor (output)
Speaker (output)
Scanner (input)
Mouse (input)
Keyboard (input)
System unit
(processor, memory…)
Storage devices
(CD-RW, Floppy, Hard disk, zip,…)
BBT 1111 / BBT1101 /BTM 1101
Components of a Computer System
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
- Hardware is made up of the physical parts of the computer, including such components as the system unit, monitor, keyboard, and printer.
- Software is made up of all the programs that instruct the compute
- Users – those who operate the computer. End users – perform specific tasks e.g.
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What does a computer do?
- Computers can perform four general operations, which comprise the information processing cycle
Input
Process
Output
Storage
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
The Information Processing Cycle
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
Data Vs Information
- Data - a collection of raw facts, figures and symbols, such as numbers, words, images, video and sound, given to the computer during the input phase
- Information is data that is organized, meaningful, and useful
- Computers manipulate data to create information.
- During the output Phase, the information that has been created is put into some form, such as a printed report
- The information can also be put in computer storage for future use
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
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What are the advantages of using computers?
p. 10
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BBT 1111 / BBT1101 /BTM 1101
Consistency
BBT 1111 / BBT1101 /BTM 1101
Group discussion question
- Using real-life examples, discuss some ethical and societal concerns brought about by using computers
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
Impact on
Labor Force
What are the disadvantages of using computers?
p. 10 - 11
Violation of
Privacy
Health Risks
Public Safety
Impact on
Environment
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
Questions
- Most computer systems are designed to require input from humans (users)
Discuss 3 roles that users play?
What are “userless” computers? Give examples of their application
- Using a diagram discuss the information processing cycle
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
Sources
- Discovering Computers 2014 by Tutor Francis.
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BBT 1111 / BBT1101 /BTM 1101
BBT 1111 / BBT1101 /BTM 1101
