Difference between revisions of "CSC270 Homework 4 2016"
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If you find out that it is a latch, you should be able to indicate: | If you find out that it is a latch, you should be able to indicate: | ||
| − | * What are the inputs that are "passing" and | + | * What are the inputs that are "passing" and putting the latch in a stable state. |
* What input (S or R) must be activated (and how) to force a 1 on Qi | * What input (S or R) must be activated (and how) to force a 1 on Qi | ||
* What input (S or R) must be activated (and how) to force a 0 on Qi | * What input (S or R) must be activated (and how) to force a 0 on Qi | ||
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[[Image:NandNorLatchQuestion.png|350px|center]] | [[Image:NandNorLatchQuestion.png|350px|center]] | ||
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=Problem 4= | =Problem 4= | ||
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Revision as of 09:07, 17 February 2016
--D. Thiebaut (talk) 10:50, 16 February 2016 (EST)
Contents
Problem 1
- Using as few additional gates as possible, implement the function f(A, B, C, D) whose Karnaugh map is shown below, on the left, using th e multiplexer shown on the right.
- Using as few additional gates as possible, implement the function g(A, B, C, D) whose Karnaugh map is shown below, on the left, using th e multiplexer shown on the right.
Problem 2
Implement your two answers for Problem 1 in Python, and shown that your design is correct (although it might not be as minimal as required).
Your Python code should have the following features:
- It must contain a header with your name(s), and a description of what it does
- It must contain a mux() function with 6 inputs (A, B, C, D, C1, C0), and returning one value (Y).
- It must generate the truth table for f and for g.
Include the code and a copy of the output in your pdf. Please use a non-proportional font when displaying code and output: it makes it much easier for the reader to read and understand code quickly.
Problem 3
Is the circuit below a latch? Why or why not?
If you find out that it is a latch, you should be able to indicate:
- What are the inputs that are "passing" and putting the latch in a stable state.
- What input (S or R) must be activated (and how) to force a 1 on Qi
- What input (S or R) must be activated (and how) to force a 0 on Qi
Problem 4
To be announced...
