Tutorials

Universal Logic gates


NOR Gate


InNOR operation one OR circuit is connected to NOT circuit in series such that the output produced by OR circuit becomes input for NOT circuit. The output produced by NOT circuit is the result of NOR operation.

Important points on NOR operation

  • NOR operation is the result of OR circuit connected to one NOT circuit in series.
  • Input is passed through OR circuit and then its output is passed to NOT gate.
  • Output of the Not is finally known as NOR output.

NAND operation rules 

inputOR  →   NOT

0+0    =      0              1

0+1    =      1              0

1+0    =      1              0

1+1    =      1              0

 

 

 

0 represents false

1 represents true

Block Diagram of NOR Gate

 

NOR gate by tutorialsinhand.com

 

 

Truth Table of NOR Gate

Truth table shown below is for two inputs.

It will have 2^n rows, where n is number of inputs.

Number of rows in truth table: 2^2 = 4

 

NOR Gate
                                  INPUT OUTPUT
A B (A+B)’
0 0 1
0 1 0
1 0 0
1 1 0

 



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