Nor gate, Computer Engineering

The NOR gate.

The NOR gate is equivalent to an OR gate followed by a NOT gate so that the output is at logic level 0 when any of the inputs are high otherwise it is at logic level 1. There may be any number of inputs. The circuit symbol for a three input NOR gate is

2072_NOR gate.png

The Boolean algebra equivalent is

103_NOR gate1.png

The truth table of a three input NOR gate is

A

B

C

X

0

0

0

1

0

0

1

0

0

1

0

0

0

1

1

0

1

0

0

0

1

0

1

0

1

1

0

0

1

1

1

0

Posted Date: 8/27/2012 1:35:07 AM | Location : United States







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