JEE Physics · Hard

Semiconductors: NOR Gate — Universal MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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NOR Gate — UniversalHardQuestion 20254

Question

To implement a NOT gate using NOR gates, one would:
  1. A
    Connect two NOR gates in series
  2. B
    Connect both inputs of a NOR gate together
    Correct
  3. C
    Use one NOR gate with inputs at opposite values
  4. D
    It cannot be done with NOR alone

Correct answer

Connect both inputs of a NOR gate together

Explanation

NOR with both inputs tied to A: Y = (A+A)̄ = Ā. Like NAND, NOR is a universal gate. Any digital function can be built using only NOR gates.