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1 checksum
"A calculated value that is used to test data for the presence of errors that can occur when data is transmitted or when it is written to disk. The checksum is calculated for a given chunk of data by sequentially combining all the bytes of data with a series of arithmetic or logical operations. After the data is transmitted or stored, a new checksum is calculated in the same way using the (possibly faulty) transmitted or stored data. If the two checksums do not match, an error has occurred, and the data should be transmitted or stored again. Checksums cannot detect all errors, and they cannot be used to correct erroneous data."
См. также в других словарях:
Checksum — [engl.], Prüfsumme … Universal-Lexikon
checksum — (SUMmation CHECK) n. final check, examination of several of the bits which are transferred in order to discover transfer errors (Computers) … English contemporary dictionary
Checksum — Effect of a typical checksum function (the Unix cksum utility). A checksum or hash sum is a fixed size datum computed from an arbitrary block of digital data for the purpose of detecting accidental errors that may have been introduced during its… … Wikipedia
checksum — A method of providing information for error detection, usually calculated by summing a set of values. The checksum is usually appended to the end of the data that it is calculated from so that they can be compared. For example, Xmodem, a… … Dictionary of networking
Checksum — Somme de contrôle La somme de contrôle (en anglais checksum) est un concept de la théorie des codes utilisé pour les codes correcteurs, elle correspond à un cas particulier de contrôle par redondance. Elle est largement utilisée en informatique… … Wikipédia en Français
checksum — UK [ˈtʃekˌsʌm] / US noun [countable] Word forms checksum : singular checksum plural checksums computing a number that is the total of the digits in a piece of data that has been stored or sent in digital form. It is used to check that nothing has … English dictionary
Checksum — In der Informatik ist eine Prüfsumme (engl.: checksum) eine einfache Maßnahme zur Gewährleistung von Datenintegrität bei der Datenübermittlung oder speicherung. Sie wird hauptsächlich bei der Datensicherung und bei der Datenübertragung verwendet … Deutsch Wikipedia
checksum — 1. noun a digit or character, derived by applying a suitable algorithm to some data, used to check whether errors have occurred in transmission, storage or data entry 2 … Wiktionary
checksum — A number that represents a larger group of numbers in order to check for errors in data transmission. It is commonly used when downloading a program. The checksum is the result of a mathematical equation, such as adding all the numbers in a group … Dictionary of telecommunications
Checksum — PodWEB A checksum is a value that is used to check the integrity of file. Checksums are often used to verify media files that have been uploaded for distribution … Audio and video glossary
checksum — kontrolinė suma statusas T sritis informatika apibrėžtis Reikšmė, laikoma arba persiunčiama kartu su duomenimis ir apskaičiuojama įvykdžius tam tikrą matematinę funkciją su tais duomenimis. Naudojama patikrinti, ar sudarantys duomenys nebuvo… … Enciklopedinis kompiuterijos žodynas
