Exam-style question
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A JK flip‑flop is in toggle mode (J=K=1). The timing diagram shows three clock pulses. What is the value of Q after the third pulse if Q starts at 0?.
- A.0
- B.1
- C.It oscillates between 0 and 1
- D.It becomes undefined
Model answer
What a good answer should say
- 1
Explanation
Why this works
Evidence: The diagram shows three clock pulses and J=K=1. Interpretation: In toggle mode, each pulse flips Q.
Implication: Starting from 0, after three flips Q becomes 1. Conclusion: The correct answer is 1.
Common mistake
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