Difference between revisions of "Byte"
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In [[computing]], a '''byte''' is a unit of data that is eight binary (bits) digits long. Thus it has 2<sup>8</sup> = 256 different values that can be logically mapped to represent letters, numbers or symbols (for example, "a", "7", or "@"). | In [[computing]], a '''byte''' is a unit of data that is eight binary (bits) digits long. Thus it has 2<sup>8</sup> = 256 different values that can be logically mapped to represent letters, numbers or symbols (for example, "a", "7", or "@"). | ||
| − | The word was coined by Dr. Werner Buchholz of [[IBM]] in 1956 <ref>http://members.aol.com/jeff570/b.html</ref> | + | The word was coined by Dr. Werner Buchholz of [[IBM]] in 1956.<ref>http://members.aol.com/jeff570/b.html</ref> |
A byte is abbreviated with a "B". [[Computer]] storage space is usually measured in byte multiples, for example 100MB is equal to 100 million bytes - or megabytes - of data. | A byte is abbreviated with a "B". [[Computer]] storage space is usually measured in byte multiples, for example 100MB is equal to 100 million bytes - or megabytes - of data. | ||
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Revision as of 14:59, June 23, 2016
In computing, a byte is a unit of data that is eight binary (bits) digits long. Thus it has 28 = 256 different values that can be logically mapped to represent letters, numbers or symbols (for example, "a", "7", or "@"). The word was coined by Dr. Werner Buchholz of IBM in 1956.[1]
A byte is abbreviated with a "B". Computer storage space is usually measured in byte multiples, for example 100MB is equal to 100 million bytes - or megabytes - of data.
Other common abbreviations include:
kB = kilobyte = 1024 bytes
GB = gigabyte = 1 billion bytes (although this is an approximation) [2]
TB = terabyte = 1024 billion bytes (or 1024 GB)
PB = petabyte = 1024 TB
EB = exabyte = one billion gigabytes
Half a byte is referred to as a nibble.[3]