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Electronics and Communication Engineering - Digital Electronics - Discussion

Discussion Forum : Digital Electronics - Section 5 (Q.No. 45)
Digital Electronics
45.
4 bit ripple counter and 4 bit synchronous counter are made using flip-flop 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
R = 10 ns, S = 40 ns
R = 40 ns, S = 10 ns
R = 10 ns, S = 30 ns
R = 30 ns, S = 10 ns
Answer: Option
Explanation:

In synchronous counter time delay is constant while in Ripple it is additive.

Discussion:
3 comments Page 1 of 1.
Fizan said:   5 years ago
How to solve this?
Dhanalakshmi said:   5 years ago
How to solve this? Please explain.
Shubham said:   5 years ago
In ripple, it will be 4X10 = 40 ns and in synchronous it is 10ns.
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