Tutorials

Exclusive Logic gates


XNOR Gate


XNOR has two or more inputs and only one output.

It produces output 1 for those input combination that have even number of 1's on the input side or all the input combination is 0.

XNOR is an exclusive logic gate.

 

XNOR operation rules 

2 input    xor result

0.0    =      1    //all the input 1 → output 1    

0.1    =      0

1.0    =      0

1.1    =      1  //even number of 1's in input →  output 1

 

Same logic will be applied for 3 or more input XNOR logic gate.

 

Truth table of XNOR

2 input XNOR gate

2 input - XNOR Truth table
                                  INPUT OUTPUT
A B result
0 0 1
0 1 0
1 0 0
1 1 1
 

3 input XNOR gate

3 input - XNOR Truth table
                                  INPUT   OUTPUT
A B C result
0 0 0 1
0 0 1 0
0 1 0 0
0 1 1 1
1 0 0 0
1 0 1 1
1 1 0 1
1 1 1 0

Any even number of 1 combination will give output 1 or all input should be 1.

 

 



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