XNOR gate

An XNOR gate (English eXclusive OR NOT ) is a gate, wherein the output if and only a logical " 1" is present, if at an even number of inputs is "1 " is present, and on the remaining "0". In the case of two inputs at the output exactly then " 1 " when both inputs " 1" or both inputs " 0" is present ( in the second case is due to zero inputs " 1", and 0 counts as even number ). The XNOR operation is also referred to as equivalent, or Biimplikation biconditional.

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Logic synthesis

The XNOR gate can be constructed by an XOR gate with downstream NOT gate (inverter).

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