Electronics and Communication Engineering - Digital Electronics - Discussion

24. 

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 increases

Answer: Option A

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 synchronous counter clock pulses to all flip-flops are applied simultaneously.


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