A logic NOT gate (inverter) outputs:
AOpposite of input (1 if input 0, 0 if input 1)
BA OR B
CA AND B
DA + B
Answer & Solution
Correct answer: A. Opposite of input (1 if input 0, 0 if input 1)
NOT (inverter): Y = NOT A. Truth table: 0 → 1, 1 → 0. Implemented with single transistor + resistor. Foundation of digital logic.
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