NOT gate, XNOR gate in DLD Digital Logic Design

What is NOT Gate or inverter?

NOT Gate works as Inverter. NOT Gate performs an inversion function. The Not Gate must have single input and output. NOT Gate is represented in the figure below;

inverter logic gate
Figure: NOT Gate
InputOutput
01
10

What is Exclusive-NOR Gate?

XNOR Gate performs a function that is equivalent to the combination of OR, AND and NOT gates.

Exclusive NOR gate
Figure: XNOR Gate
InputsOutput
XYZ
001
010
100
111

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