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Reported Question / Answer
Q.) A 4-bit ripple counter consists of flip-flops, which each have a propagation delay from clock to Q output of 15 ns. For the counter to recycle from 1111 to 0000, it takes a total of ________.
1)
30 ns
2)
15 ns
3)
60 ns
4)
45 ns
5)
NULL
Answer :
3
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Human Verification : Answer 2 + 3 = ?
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