Digital Electronics - Counters - Discussion
Discussion Forum : Counters - General Questions (Q.No. 38)
38.
A 4-bit ripple counter consists of flip-flops, which each have a propagation delay from clock to Q output of 15 ns. For the counter to recycle from 1111 to 0000, it takes a total of ________.
Discussion:
2 comments Page 1 of 1.
Sunny said:
1 decade ago
one bit change is 15ns ... in the qust 1111 to 0000 ie 4 bit change so
4x15= 60ns......
4x15= 60ns......
Sudhakar said:
1 decade ago
Kindly note that, the given counter is ripple(asynchronous), So only it would take 4*15 = 60ns.
If it is synchronous counter, it would take 15ns, to come out the results.
If it is synchronous counter, it would take 15ns, to come out the results.
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