Digital Circuits & Systems ilab week 2
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ecet230_w2_lab_cover_sheet.docxLaboratory Report Cover Sheet DeVry University College of Engineering and Information Sciences
Course Number: ECET230
Professor:
Laboratory Number: 2
Laboratory Title: Decoders , Multiplexers, and adder circuits
Submittal Date: Click here to enter a date.
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Observations/Measurements:
IV. A.2. Output with Data Select LOW:
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IV. A.2. Output with Data Select LOW:
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Questions:
1. Why would you need to put 330 Ω resistors on the output for a discreet logic circuit, but not for the MultiSim simulated circuit or the eSOC III circuit?
2. Why is the seven-segment display driven with an active-LOW signal using discrete logic and an active-HIGH with the eSOC board?
3. In the simulation run of the four-bit adder, when we performed the additions 2 + 4 and 3 + 6 we did not immediately have an output of 6 and 9 respectively on SOUT. What could be the cause?
4. If we changed the count period to 100nS for AI and BI would this correct the anomalies in Question 1? Why or why not?
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Laboratory Cover Sheet |
8 |
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Working Circuit(s)/Program(s) |
8 |
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Observations/Measurements |
6 |
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Questions |
8 |
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Total Points |
30 |
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Course Number: ECET-230 Laboratory Number: 2 Page 2 of 3
