parity check

parity check
parity check par"i*ty check`, n. (Computers) The act or process of testing whether a byte or other data structure has an even or odd number of bits set to the value of 1; -- it is used primarily to detect errors in data, especially in memory banks or in data transmitted over a communications line. The parity can be changed by assigning one bit in each data structure as the {parity bit}, so that the total number of bits set to the value of 1 is odd (odd parity) or even (even parity). If parity is used for error checking the writing and reading systems must first agree on which type of parity (odd or even) to use; if the reading system detects a deviation from the agreed parity, it signals an error, to be handled by the error-handling processes of the system. [PJC]

The Collaborative International Dictionary of English. 2000.

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  • parity check — lyginumo kontrolė statusas T sritis automatika atitikmenys: angl. even odd check; even parity check; odd even check; odd parity check; parity check; parity detection vok. Gerade Ungerade Kontrolle, f; Paritätskontrolle, f; Paritätsprüfung, f rus …   Automatikos terminų žodynas

  • parity check — noun a system of checking for errors in computer functioning • Syn: ↑redundancy check, ↑odd even check • Hypernyms: ↑confirmation, ↑verification, ↑check, ↑substantiation * * * Computers. a method for detecting errors in data comm …   Useful english dictionary

  • parity check — lyginumo patikrinimas statusas T sritis automatika atitikmenys: angl. parity check vok. Paritätsprüfung, f rus. проверка на чётность, f pranc. contrôle de parité, m …   Automatikos terminų žodynas

  • parity check — lyginumo tikrinimas statusas T sritis informatika apibrėžtis Kompiuterio ↑žodžio (2), (↑baito) persiuntimo teisingumo tikrinimas papildant jį ↑lyginumo bitu tokiu, kad viso žodžio bitų suma būtų lyginė. Jeigu patikrinus persiųstą tokį žodį… …   Enciklopedinis kompiuterijos žodynas

  • parity check — check of duality …   English contemporary dictionary

  • Parity-check matrix — In coding theory, a parity check matrix of a linear block code C is a generator matrix of the dual code. As such, a codeword c is in C if and only if the matrix vector product Hc=0. The rows of a parity check matrix are parity checks on the… …   Wikipedia

  • Parity-Check-Code — Codetafel dualergänztes gerades Paritätsbit (E = even = gerade) Codetafel dualergänztes ungerades Paritätsbit (O = odd = ungerade) Die Paritätskontrol …   Deutsch Wikipedia

  • parity check bit — lyginumo bitas statusas T sritis automatika atitikmenys: angl. parity bit; parity check bit vok. Paritätsbit, n; Paritätskontrollbit, n rus. бит четности, m; контрольный двоичный разряд четности, m; проверочный двоичный разряд четности, m pranc.… …   Automatikos terminų žodynas

  • parity check — Computers. a method for detecting errors in data communications or within a computer system by counting the number of ones or zeros per byte or per word, including a special check bit (parity bit), to see if the value is even or odd. Also called… …   Universalium

  • Parity check — Контроль на чётность; контроль по чётности …   Краткий толковый словарь по полиграфии

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