The XNOR gate (sometimes spelled "exnor" or "enor"and rarely written NXOR) is a digital logic gate whose function is the inverse of the exclusive OR (XOR) gate. The two-input version implements logical equality, behaving according to the truth table to the right. A HIGH output (1) results if both of the inputs to the gate are the same. If one but not both inputs are HIGH (1), a LOW output (0) results.
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“Enter through the narrow gate; for the gate is wide and the road is easy that leads to destruction, and there are many who take it.”
—Bible: New Testament, Matthew 7:13.