NOR gate

INPUT  OUTPUT A  B  A NOR B0  0  10  1  01  0  01  1  0
The NOR gate is a logic gate that outputs 1 (true) when both of its inputs are 0 (false). That means that if at least one of its inputs is 1 (true), the output will be 0.

The best way to remember a NOR operation is "neither one or the other, nor both."

 Symbols 
There are three symbols for the NOR gate:

Image:NOR ANSI Labelled.svgImage:NOR IEC.svgimage:NOR DIN.svgMIL/ANSI SymbolIEC SymbolDIN Symbol

Category:Logic gates