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The following figure shows a logic gate circuit with two inputs A and B and the output C. The voltage waveforms of A, B, and C are as shown below. The logic circuit gate is

1. NAND gate
2. NOR gate
3. OR gate
4. AND gate

Correct answer: NOR gate

Solution

The output waveform C is high only when both inputs A and B are low, which matches the behavior of a NOR gate. A NOR gate gives a high output only when all inputs are low.

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