Difference between revisions of "SCSI"

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Over time, a variety of options were developed for many of these; e.g. the original standard was 8-[[bit]] [[parallel]] using [[single-ended signalling]], but later versions used 16-bit with [[differential pair]]s, at a variety of speeds (mostly [[synchronous]], but one was [[asynchronous]]). Even later, a high-speed [[serial]] version was developed; and ultimately, one which worked over [[TCP/IP]] (usually over an [[Ethernet]]).
 
Over time, a variety of options were developed for many of these; e.g. the original standard was 8-[[bit]] [[parallel]] using [[single-ended signalling]], but later versions used 16-bit with [[differential pair]]s, at a variety of speeds (mostly [[synchronous]], but one was [[asynchronous]]). Even later, a high-speed [[serial]] version was developed; and ultimately, one which worked over [[TCP/IP]] (usually over an [[Ethernet]]).
  
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Latest revision as of 13:29, 21 October 2018

SCSI (formally 'Small Computer System Interface') was a popular interface standard for high-speed devices (disks, tape drives, scanners, etc). It was composed of a set of standards for the various layers: physical signalling, commands, etc.

Over time, a variety of options were developed for many of these; e.g. the original standard was 8-bit parallel using single-ended signalling, but later versions used 16-bit with differential pairs, at a variety of speeds (mostly synchronous, but one was asynchronous). Even later, a high-speed serial version was developed; and ultimately, one which worked over TCP/IP (usually over an Ethernet).