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more about parity
## parity |

3 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Parity \Par"i*ty\, n. [L. paritas fr par, paris, equal: cf F. parit['e]. See {Pair}, {Peer} an equal.] The quality or condition of being equal or equivalent; A like state or degree; equality; close correspondence; analogy; as parity of reasoning. ``No parity of principle.'' --De Quincey. Equality of length and parity of numeration. --Sir T. Browne. From WordNet r 1.6 [wn]: parity n 1: (mathematics) a relation between a pair of integers: if both integers are odd or both are even they have the same parity; if one is odd and the other is even they have different parity 2: (computer science) an error detection procedure in which a bit (0 or 1) added to each group of bits so that it will have either an odd number of 1's or an even number of 1's; e.g., if the parity is odd then any group of bits that arrives with an even number of 1's must contain an error [syn: {parity bit}] 3: parity is conserved in a universe in which the laws of physics are the same in a right-handed system of coordinates as in a left-handed system [syn: {conservation of parity}, {space-reflection symmetry}, {mirror symmetry}] 4: functional equality From The Free On-line Dictionary of Computing (13 Mar 01) [foldoc]: parityAn extra bit added to a {byte} or {word} to reveal errors in storage (in {RAM} or {disk}) or transmission. Even (odd) parity means that the parity bit is set so that there are an even (odd) number of one bits in the word including the parity bit. A single parity bit can only reveal single bit errors since if an even number of bits are wrong then the parity bit will not change. Moreover, it is not possible to tell which bit is wrong as it is with more sophisticated {error detection and correction} systems. See also {longditudinal parity}, {checksum}, {cyclic redundancy check}. (1996-03-01)

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