Question

In J-K flip-flop, “no change” condition appears when ___________

(a) J = 1, K = 1

(b) J = 1, K = 0

(c) J = 0, K = 1

(d) J = 0, K = 0

I have been asked this question in an online quiz.

Question is taken from Flip Flops in section Flip-Flops of Digital Circuits

Answer 1

Correct answer is (d) J = 0, K = 0

To explain: If J = 0, K = 0, the output remains unchanged. This is the memory storing state.