A 4-bit ripple counter consists of flip-flops, which each have a propa – McqOptions

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1.	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 ________
A.	15 ns
B.	30 ns
C.	45 ns
D.	60 ns
Answer» E.

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