ISRO | ISRO CS 2016 | Question 7
Consider the following gate network
Which one of the following gates is redundant?
(A) Gate No. 1
(B) Gate No. 2
(C) Gate No. 3
(D) Gate No. 4
Explanation: Output = w’ + w’z + z’xy
= w'(1 + z) + z’xy
= w’ + z’xy
From the expression, we can deduce that gate number 2 is redundant.
So, option (B) is correct.
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