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http://www.hyperdictionary.com/dictionary/byteWordNet Dictionary
Definition: [n] a sequence of 8 bits (enough to represent one character of alphanumeric data) processed as a single unit of information
See Also: bit, computer memory unit, nibble, nybble, word
Computing Dictionary
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/bi:t/ (B) A component in the machine data hierarchy usually larger than a bit and smaller than a word; now most often eight bits and the smallest addressable unit of storage. A byte typically holds one character.
A byte may be 9 bits on 36-bit computers. Some older architectures used "byte" for quantities of 6 or 7 bits, and the PDP-10 and IBM 7030 supported "bytes" that were actually bit-fields of 1 to 36 (or 64) bits! These usages are now obsolete, and even 9-bit bytes have become rare in the general trend toward power-of-2 word sizes.
The term was coined by Werner Buchholz in 1956 during the early design phase for the IBM Stretch computer. It was a mutation of the word "bite" intended to avoid confusion with "bit". In 1962 he described it as "a group of bits used to encode a character, or the number of bits transmitted in parallel to and from input-output units". The move to an 8-bit byte happened in late 1956, and this size was later adopted and promulgated as a standard by the System/360 operating system (announced April 1964).
James S. Jones <jsjones@jsjones.graceland.edu> adds:
I am sure I read in some historical brochure by IBM some 15-20 years ago that BYTE was an acronym that stood for "Bit asYnchronous Transmission E__?__" which related to width of the bus between the Stretch CPU and its CRT-memory (prior to Core).
Terry Carr <bear@mich.com> says:
In the early days IBM taught that a series of bits transferred together (like so many yoked oxen) formed a Binary Yoked Transfer Element (BYTE).
See also nibble, octet.
[Jargon File]
See Also: publication, unit
Når du nu søger efter en "data"byte definition kan man tilføje at det er en parameter i en beregning med ovennævnte repræsentation, i modsætning til en program byte, som er en del af en kommando. Harward processor arkitekturerer skelner eksempelvis både internt og eksternt mellem data og program hukommelse.