As the number of flip flops are increased, the total propagation delay of __________(a) Ripple counter increases but that of synchronous counter remains the same(b) Both ripple and synchronous counters increase(c) Both ripple and synchronous counters remain the same(d) Ripple counter remains the same but that of synchronous counter increasesI got this question in final exam.I would like to ask this question from Counter Implementation and Applications in section Counters of Digital Circuits

As the number of flip flops are increased, the total propagation delay

1.	As the number of flip flops are increased, the total propagation delay of __________(a) Ripple counter increases but that of synchronous counter remains the same(b) Both ripple and synchronous counters increase(c) Both ripple and synchronous counters remain the same(d) Ripple counter remains the same but that of synchronous counter increasesI got this question in final exam.I would like to ask this question from Counter Implementation and Applications in section Counters of Digital Circuits
Answer» CORRECT option is (a) Ripple counter increases but that of SYNCHRONOUS counter remains the same Easiest explanation: In ripple counter, the clock pulses are applied to ONE flip-flop only. Hence, as the number of flip-flops increases the DELAY increases. In the synchronous counter, clock pulses to all flip-flops are applied SIMULTANEOUSLY.

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