Last Updated : 19 Nov, 2018
Which one of the following circuits is NOT equivalent to a 2-input XNOR (exclusive NOR) gate? \"GATECS201113\" (A) A (B) B (C) C (D) D

Answer: (D)

Explanation: All options except D produce XOR as described below : NOT({a \\bigoplus b}) = XNOR \\\\ NOT(NOT(a)\\bigoplus NOT(b)) = NOT(aNOT(b) + NOT(a)b) = XNOR \\\\ NOT(a) \\bigoplus b = ab + NOT(ab)= XNOR \\\\ NOT(NOT(aNOT(b))(NOT(b)+a)) = NOT(NOT(ab)+ba) = NOT(XNOR)

Quiz of this Question

Share your thoughts in the comments