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Question: Answered & Verified by Expert
The output of a NOR gate is HIGH when
PhysicsSemiconductorsTS EAMCETTS EAMCET 2020 (11 Sep Shift 2)
Options:
  • A all inputs are HIGH
  • B any input is $\mathrm{HIGH}$
  • C any input is LOW
  • D all inputs are LOW
Solution:
2117 Upvotes Verified Answer
The correct answer is: all inputs are LOW
The Boolean expression of NOR gate is
$Y=\overline{A+B}$
where, $A$ and $B$ are inputs and $Y$ is the output.
Truth table of NOR gate is


Hence, when all inputs $(A$ and $B)$ are low $(0)$, then output of NOR gate is high (1).

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