Awesome q2a theme
0 votes
38 views

in Digital Logic by (7 points) | 38 views

1 Answer

+4 votes
Best answer

Upper one is an XOR gate and lower one is XNOR gate, we know that XOR and XNOR are compliments of each other, hence for same inputs A and B, one of these gate will give 0 and other gate will give 1 (The values of A and B won’t matter here).         …………...(i)

 

Now, the gate in the right side is again an XNOR gate, consider it as NOT of XOR, it would be easier to analyze.

Now, we want the NOT of XOR to be 1, hence the result of XOR has to 0.

We already know that among the upper 2 inputs, one input is 1 and other is 0 (from what we observed in (i)).

Also, 1 XOR 0 = 1, hence upper 2 lines will result in 1.

Now you want to make 1 XOR C = 0, which is possible only if C is 1.

 

Hence, option 4 is correct. 

by (855 points)
selected by
0
Thanks bro
Quick search syntax
tags tag:apple
author user:martin
title title:apple
content content:apple
exclude -tag:apple
force match +apple
views views:100
score score:10
answers answers:2
is accepted isaccepted:true
is closed isclosed:true
Welcome to GATE CSE Doubts, where you can ask questions and receive answers from other members of the community.
8,437 questions
2,714 answers
13,238 comments
95,460 users