XNOR Gate:

The X-NOR Gate is a type of gate which are reverse form of X-OR gate function.

An X-NOR gate is essentially a mixture of an X-OR gate and a NOT gate, but has a truth table similar to a regular NOR gate in that it has an output that is usually at logic level "1" and goes "LOW" to logic level "0" " when ANY of its inputs is at logic level "1."

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