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Mr. Dubey • 51.67K Points
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Q.) Which one is a basic comparator?

(A) xor
(B) xnor
(C) and
(D) nand
Correct answer : Option (A) - xor

Explanation:
 generally, an xnor outputs high for even number of 1s or all 0s and outputs low for otherwise. thus, an xnor gate is a basic comparator, because its output is “1” only if its two input bits are equal.

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