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Question 354

What logical operation does a NAND gate perform?

  1. It produces a 0 at its output only if all inputs are 0
  2. It produces a 1 at its output only if all inputs are 1
  3. It produces a 0 at its output if some but not all inputs are 1
  4. It produces a 0 at its output only if all inputs are 1Correct answer

Explanation

NAND is AND followed by inversion. AND gives 1 only when every input is 1, so inverting that gives 0 only when every input is 1 and 1 for every other input combination.

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Question 354: What logical operation does a NAND gate perform? · FCC Amateur Extra Class (Element 4) · Questena