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Question 20248
JEE Physics · Easy

Semiconductors: NAND Output MCQ

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NAND OutputEasyQuestion 20248

Question

NAND gate output is 0 only when:
  1. A
    All inputs are 0
  2. B
    All inputs are 1
    Correct
  3. C
    Any input is 0
  4. D
    Both inputs differ

Correct answer

All inputs are 1

Explanation

NAND: Y = (AB)̄ = NOT(A AND B). Output 0 only when AND output is 1 — i.e., when all inputs are 1. Truth table: 00→1, 01→1, 10→1, 11→0.

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