To make a JK flip-flop operate like a D flip-flop, which of the following…
2025
To make a JK flip-flop operate like a D flip-flop, which of the following logic expressions should be applied to its inputs?
- A.
D = J
- B.
D = J ⊕ K
- C.
D = J K'
- D.
D = J + K
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Correct answer: C
To convert a JK flip-flop to function as a D flip-flop, equate their characteristic equations. The JK next state is Q(t+1) = JQ' + K'Q, while the D flip-flop is Q(t+1) = D. Setting J = D and K = NOT D transforms the JK equation to Q(t+1) = DQ' + (D')'Q = D(Q' + Q) = D. This derivation confirms the configuration ensures the next state follows input D.