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When both inputs of a J-K flip-flop cycle, the output will ___________

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When both inputs of a J-K flip-flop cycle, the output will ___________

(a) Be invalid

(b) Change

(c) Not change

(d) Toggle

The question was asked in my homework.

This question is from Flip Flops topic in section Flip-Flops of Digital Circuits

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Correct choice is (c) Not change

Explanation: After one cycle the value of each input comes to the same value. Eg: Assume J=0 and K=1. After 1 cycle, it becomes as J=0->1->0(1 cycle complete) and K=1->0->1(1 cycle complete). The J & K flip-flop has 4 stable states: Latch, Reset, Set and Toggle.

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