A 4 bit ripple counter and 4 bit synchronous counter are made using flip-flops…

2025

A 4 bit ripple counter and 4 bit synchronous counter are made using flip-flops having a propagation delay of 10 nsec each. If the worst case delay in the ripple counter and the synchronous counter be R and S respectively, then:

Answer: C. R = 40 nsec, S = 10 nsec

  1. A.

    R = 10 nsec, S = 30 nsec

  2. B.

    R = 30 nsec, S = 10 nsec

  3. C.

    R = 40 nsec, S = 10 nsec

  4. D.

    R = 10 nsec, S = 40 nsec

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Correct answer: C

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