Difference between revisions of "CSC270 Homework 4 2012"

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(Problem #2)
(Problem #2)
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Given the circuit above, which uses 74LS74 D flip-flops, complete the timing diagram below and show how Q0, Q1 and Q2 behave as a function of time.
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Given the circuit above, which uses 74LS74 D flip-flops, complete the timing diagram below and show how Q0, Q1 and Q2 behave as a function of time.  Assume that the timing diagram below shows the time the circuits were powered-up at the left end of the time axes.
 
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<center>[[Image:CSC270TimingDiagramDClock.png|500px]]
 
<center>[[Image:CSC270TimingDiagramDClock.png|500px]]

Revision as of 17:25, 22 February 2012

--D. Thiebaut 17:23, 22 February 2012 (EST)


This assignment is due on 2/29/12 at 1:10 p.m.



Problem #1

Can one build an RS flip-flop using one NAND and one NOR, wired together in a feedback loop, similar to the NAND-NAND or NOR-NOR RS flip-flop?

Why, or why not?

Problem #2

3DFlipFlopsSimple.png


Given the circuit above, which uses 74LS74 D flip-flops, complete the timing diagram below and show how Q0, Q1 and Q2 behave as a function of time. Assume that the timing diagram below shows the time the circuits were powered-up at the left end of the time axes.

CSC270TimingDiagramDClock.png