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Which logic gate produces a HIGH output only when all of its inputs are HIGH ?

  • A.AND
  • B.OR
  • C.NAND
  • D.NOR

Answer: D

Correct answer: AND

The AND gate outputs 1 only for the single input combination in which every input is 1. NAND is its complement, giving 0 only in that case, while OR needs just one HIGH input.

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