Multiple choice

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

  1. R = 10 ns, S = 40 ns

  2. R = 40 ns, S = 10 ns

  3. R = 10 ns, S = 30 ns

  4. R = 30 ns, S = 10 ns

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation