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The output of an exclusive-NOR gate is HIGH if ________.

  • A.the inputs are equal
  • B.one input is HIGH, and the other input is LOW
  • C.the inputs are unequal
  • D.none of the above

Answer: A

Correct answer: the inputs are equal

XNOR is the complement of XOR, so where XOR detects difference, XNOR detects agreement. It is HIGH when both inputs are 0 and when both are 1.

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