Amateur Extra Class: 2020–2024
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E7A09:

What logical operation is performed by an exclusive NOR gate?

  1. It produces logic 0 at its output only if all inputs are logic 0
  2. It produces logic 1 at its output only if all inputs are logic 1
  3. It produces logic 0 at its output if only one input is logic 1
  4. It produces logic 1 at its output if only one input is logic 1
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