Which combination of logic gates is universally known as a 'Universal Gate' because it can be used to construct any other basic logic gate (AND, OR, NOT)? MCQ with Answer and Explanation

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Which combination of logic gates is universally known as a 'Universal Gate' because it can be used to construct any other basic logic gate (AND, OR, NOT)?

A. NAND and NOR

B. XOR and XNOR

C. NOT and AND

D. AND and OR

Answer: Option A

Solution (By JKExamLibrary)

NAND (NOT-AND) and NOR (NOT-OR) gates are called Universal Gates in digital electronics. By cleverly combining multiple NAND gates (or multiple NOR gates) together, one can perfectly replicate the logical function of any basic gate (NOT, AND, OR) without needing the actual basic gates themselves.

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