Question

The output of an EX-NOR gate is 1. Which input combination is correct?

(a) A = 1, B = 0

(b) A = 0, B = 1

(c) A = 0, B = 0

(d) A = 0, B’ = 1

I got this question in quiz.

My question is from Quine McCluskey or Tabular Method of Minimization of Logic Functions in portion Boolean Algebra and Minimization Techniques and Logic Gates of Digital Circuits

Answer 1

Correct option is (c) A = 0, B = 0

To explain I would say: The output of EX-NOR gate is given by AB + A’B’. So, for A = 0 and B = 0 the output will be 1.