GATE 2023 IN – Question 16
The table gives present state, next state, and control input. Identify the flip-flop.
| Present Q(t) | Next Q(t+1) | Input |
|---|---|---|
| 0 | 0 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |
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Correct answer: (A) T flip-flop
Explanation
The input is 0 when the state holds and 1 when it changes.
Thus $Q(t+1)=Q(t)\oplus T$, the characteristic equation of a **T flip-flop, A**.