NOR

The output of an NOR (NOT OR) function is only 1 if all inputs are 0 (open). When one of the inputs is on (logical 1 state), the output is off.

A block input that is not used (x) is assigned: x = 0.

NOR function logic table

Input 1

Input 2

Input 3

Input 4

Output

0

0

0

0

1

0

0

0

1

0

0

0

1

0

0

0

0

1

1

0

0

1

0

0

0

0

1

0

1

0

0

1

1

0

0

0

1

1

1

0

1

0

0

0

0

1

0

0

1

0

1

0

1

0

0

1

0

1

1

0

1

1

0

0

0

1

1

0

1

0

1

1

1

0

0

1

1

1

1

0

Overview