Other uses include comparators, subtractors, and controlled inverters. A half adder has an XOR gate and an AND gate. Resultantly, XOR gates are used to implement binary addition in computers. XOR can also be viewed as an additional modulo 2. An easy way to remember XOR is "must have one or the other, but not both". The XOR represents the inequality function, that is, the output is true if the inputs are not identical, and then the output is false. If both the inputs are false (either 0 or LOW) or if both are true, there results in a false output. An XOR gate implements an exclusive OR, i.e., a true output result if one, and only one, of the gate inputs, is true. XOR gate (sometimes called EOR, EXOR, and pronounced as Exclusive OR) is a digital logic gate that results in true (either 1 or HIGH) output when the number of true inputs is an odd count.
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