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A '''buffer''' is |
A '''buffer''' is |
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− | {{Quote|a block of [[memory]] that temporarily holds [[data]] and allows the [[data]] to be read or written in larger chunks to improve a [[computer]]’s performance. The buffer is used for temporary [[storage]] of [[data]] read from or waiting to be sent to a [[device]] such as a [[hard disk]], [[CD-ROM]], [[printer]], or [[tape drive]].<ref>[[Electronic Crime Scene Investigation: A Guide for First Responders]] |
+ | {{Quote|a block of [[memory]] that temporarily holds [[data]] and allows the [[data]] to be read or written in larger chunks to improve a [[computer]]’s performance. The buffer is used for temporary [[storage]] of [[data]] read from or waiting to be sent to a [[device]] such as a [[hard disk]], [[CD-ROM]], [[printer]], or [[tape drive]].<ref>[[U.S. Department of Justice]], [[National Institute of Justice]], [[Electronic Crime Scene Investigation: A Guide for First Responders]] 50 (2d ed. Apr. 2008) ([http://www.ncjrs.gov/pdffiles1/nij/219941.pdf full-text]).</ref>}} |
== Overview == |
== Overview == |
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− | Buffers are used to offset differences between the operating speeds of different devices, such as a [[printer]] and a [[computer]]. Buffers are used for many purposes, such as (a) [[interconnect]]ing two [[digital]] circuits operating at different rates, (b) holding [[data]] for use at a later time, (c) allowing timing corrections to be made on a [[data stream]], (d) |
+ | Buffers are used to offset differences between the operating speeds of different devices, such as a [[printer]] and a [[computer]]. Buffers are used for many purposes, such as (a) [[interconnect]]ing two [[digital]] circuits operating at different rates, (b) holding [[data]] for use at a later time, (c) allowing timing corrections to be made on a [[data stream]], (d) collecting [[binary data]] [[bit]]s into groups that can then be operated on as a unit, (e) delaying the transit time of a signal in order to allow other operations to occur. |
== References == |
== References == |