XNOR gate

INPUT  OUTPUT A  B  A XNOR B0  0  10  1  01  0  01  1  1
The XNOR gate is a logic gate that outputs 1 (true) when both of its inputs are equal. If only one output is high(1) the output is low (0).
It is opposite of XOR GATE.

 Symbols 
There are three symbols for the XNOR gate:

Image:XNOR ANSI Labelled.svgImage:XNOR IEC.svgimage:XNOR DIN.svgMIL/ANSI SymbolIEC SymbolDIN Symbol

Category:Logic gates