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Unit 2 · Computer System Architecture Paper 2 CS · June 2025

Which of the following gates do not give output 1 when both the inputs are 0 -

A. NAND gate

B. NOR gate

C. X-OR gate

D. X-NOR gate

Pick an option to check yourself, or open the answer below.

Show answer & explanation

Correct answer: D. C Only

Explanation

With inputs 0, 0: NAND = 1, NOR = 1, XNOR = 1 (inputs equal), XOR = 0. Only XOR fails to output 1.

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