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The output of an XOR gate is HIGH only when ________.

  • A.both inputs = 0
  • B.both inputs = 1
  • C.the two inputs are unequal
  • D.both inputs are undefined

Answer: C

Correct answer: the two inputs are unequal

XOR gives 1 when its inputs differ and 0 when they agree, so equal inputs - both 0 or both 1 - produce a LOW output.

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