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For realisation of JK flip-flop from SR flip-flop, if J=1, K=0 & present state is 0(i.e. Q(n)=0) then excitation input will be ___________(a) S=0, R=1(b) S=X, R=0(c) S=1, R=0(d) S=1, R=1The question was posed to me in an international level competition.This key question is from Realisation of one Flip-flop using other Flip-flops in portion Flip-Flops of Digital Circuits

Answer»

The CORRECT CHOICE is (c) S=1, R=0

To explain: If J=1, K=0 & PRESENT state is 0(i.e. Q(n)=0) then next state will be 1 which results EXCITATION INPUTS as S=1 & R=0.



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