The output of the logic gate in figure is

F1 Shubham Madhu 07.10.20 D1

This question was previously asked in
SDSC ISRO Technical Assistant Electronics 8 April 2018 Official Paper
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  1. 0
  2. 1
  3.  A̅  
  4. A

Answer (Detailed Solution Below)

Option 3 :  A̅  
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Detailed Solution

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Concept:

XNOR Gate:

Symbol:

F1 S.B Madhu 02.06.20 D 7

Truth Table:

Input A

Input B

Output

\(Y={\overline{A\oplus B}}\)

0

0

1

0

1

0

1

0

0

1

1

1

 

Output Equation: \(Y={\overline{A\oplus B}}\)

1) If B is always Low, the output is the inverted value of the other input A, i.e. A̅.

2) The output is low when both the inputs are different.

3) The output is high when both the inputs are the same.

4) XNOR gate produces an output only when the two inputs are same.

Analysis:

F1 Shubham Madhu 07.10.20 D1

\(F = \overline{A+0}=\bar A\)

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