The output F of the circuit
2018
The output F of the circuit
- A.
1
- B.
0
- C.
X
- D.
X'
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Correct answer: B
The circuit features XOR gates with a feedback loop connecting the output X back to an input gate. In digital logic, when an output is XORed with a feedback signal derived from itself (e.g., X = Input ^ X), the logic simplifies to a constant value. Specifically, this relationship implies that for a stable state in this configuration, the output evaluates to 0.