# bit

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bit
(b)
1. the basic unit of the amount of data. Each bit records one of the two possible answers to a single question: "0" or "1," "yes" or "no," "on" or "off." When data is represented as binary (base-2) numbers, each binary digit is a single bit. In fact, the word "bit" was coined by the American statistician and computer scientist John Tukey (b. 1915) in 1946 as an acronym for binary digit. Somewhat more generally, the bit is used as a logarithmic unit of data storage capacity, equal to the base-2 logarithm of the number of possible states of the storage device or location. For example, if a storage location stores one letter, then it has 26 possible states, and its storage capacity is log2 26 = 4.7004 bits.
2. a unit of information content, now known also as the shannon. In information and communications theory, if a message has probability p of being received, then its information content is -log2 p shannons. This unit is often called the bit, because if the message is a bit string and all strings are equally likely to be received, then the information content is equal the number of bits.

Dictionary of units of measurement. 2015.

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• bit — bit …   Dictionnaire des rimes

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• Bit — Saltar a navegación, búsqueda Bit es el acrónimo de Binary digit. (dígito binario). Un bit es un dígito del sistema de numeración binario. Mientras que en el sistema de numeración decimal se usan diez dígitos, en el binario se usan sólo dos… …   Wikipedia Español

• BIT — (binary digit) Contraction de l’expression anglaise binary digit (chiffre binaire), le terme bit prend en informatique trois significations différentes. Puisqu’on se trouve ici dans un système de numération à base 2, deux symboles (habituellement …   Encyclopédie Universelle

• Bit — [bɪt], das; [s], [s]: kleinste Einheit der Informationseinheit beim Computer: ein Byte besteht aus acht Bit; ein Bit steht entweder auf 0 oder auf 1. * * * bịt 〈EDV; Zeichen für〉 Bit * * * 1Bịt , das; [s], s <aber: eine Million Bits od.… …   Universal-Lexikon

• bit — bit1 [bit] n. [ME < OE bite, a bite < bītan, BITE] 1. the part of a bridle that goes into a horse s mouth, used to control the horse: see BRIDLE 2. anything that curbs or controls 3. the part of a pipestem held in the mouth: see PIPE 4. th …   English World dictionary

• bit — Ⅰ. bit [1] ► NOUN 1) a small piece or quantity. 2) (a bit) a short time or distance. 3) (also bit of fluff or stuff) informal a girl or young woman. ● a bit …   English terms dictionary

• bit.ly — bit.ly …   Википедия

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• bit — BIT, biţi, s.m. (inform.) Unitate de măsură pentru cantitatea de informaţie (3) dintr un semnal, corespunzător logaritmului în baza 2. – Din engl., fr. bit. Trimis de paula, 03.09.2007. Sursa: DEX 98 ﻿ bit (unitate de informaţie) s. m., pl. biţi… …   Dicționar Român

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