Literal interpretation of the name "exclusive or", or observation of the IEC rectangular symbol, raises the question of correct behaviour with additional inputs. Standard chip packages Philips 4070 quad dual input XOR chip on printed circuit board For the NOR constructions, the lower arrangement offers the advantage of a shorter propagation delay (the time delay between an input changing and the output changing). An XOR gate implements an exclusive or ( ↮, noting from de Morgan's Law that a NAND gate is an inverted-input OR gate.įor the NAND constructions, the upper arrangement requires fewer gates. XOR gate (sometimes EOR, or EXOR and pronounced as Exclusive OR) is a digital logic gate that gives a true (1 or HIGH) output when the number of true inputs is odd.
For other uses, see XOR (disambiguation). For XOR logical operation, see Exclusive or. This article is about XOR digital logic gate (e.g.
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