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VT220
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{{Short description|Computer terminal from Digital Equipment Corporation}} {{Infobox information appliance | name = VT220 | image = Image:DEC vt220.jpg | caption = DEC VT220 terminal with [[LK201]] keyboard | manufacturer = [[Digital Equipment Corporation|DEC]] | type = [[Computer terminal]] | releasedate = {{Start date|1983|11}} | cpu = [[Intel 8051]] @ 11.0592 MHz | memory = 16 KB RAM<br />24 KB ROM<br />256 byte [[NVRAM]] | display = {{convert|12|in|cm|abbr=on}} [[Cathode-ray tube|CRT]]<br />80x24 characters | input = [[LK201]] [[Computer keyboard|keyboard]] | connectivity = [[RS-232]] serial<br />[[Digital current loop interface|20 mA current loop]]<br />[[DE-9]] serial printer port | price = {{USD|1295|1983|round=-2}} | predecessor = [[VT100]] | successor = [[VT320]] }} [[File:DEC VT220 terminal.jpg|thumb|DEC VT220 in use at [[The National Museum of Computing]]]] The '''VT200 series''' is a family of [[computer terminal]]s introduced by [[Digital Equipment Corporation]] (DEC) in November 1983.<ref>{{cite web |archiveurl=https://web.archive.org/web/20090605012325/http://www.cs.utk.edu/~shuford/terminal/dec.html |archivedate=2009-06-05 |url=http://www.cs.utk.edu/~shuford/terminal/dec.html |title=DEC Video Terminals |author=Richard Shuford |date=1995β2005 }}</ref><ref>{{cite web |url=http://vt100.net/docs/vt220-rm/ |title=VT220 Programmer Reference Manual |date=August 1984 |publisher=[[Digital Equipment Corporation]] }}</ref> The '''VT220''' was the basic version, a text-only version with multi-lingual capabilities. The '''VT240''' added monochrome [[ReGIS]] [[vector graphics]] support to the base model, while the '''VT241''' did the same in color. The 200 series replaced the successful [[VT100]] series, providing more functionality in a much smaller unit with a much smaller and lighter keyboard. Like the VT100, the VT200 series implemented a large subset of [[ANSI escape code|ANSI X3.64]]. Among its major upgrades was a number of international character sets, as well as the ability to define new character sets. The VT200 series was extremely successful in the market. Released at $1,295,<ref name="computerworld19831121_vt200">{{ cite magazine | url=https://archive.org/details/sim_computerworld_1983-11-21_17_47/mode/1up | title=DEC Unveils New Design In Successor To VT100 | magazine=Computerworld | last1=Bartimo | first1=Jim | date=21 November 1983 | access-date=26 January 2023 | pages=1, 6 }}</ref> but later priced at $795, the VT220 offered features, packaging and price that no other serial terminal could compete with at the time. In 1986, DEC shipped 165,000 units, giving them a 42% market share, double that of the closest competitor, [[Wyse]]. Competitors adapted by introducing similar models at lower prices, leading DEC to do the same by releasing the less-expensive $545 [[VT320|VT300 series]] in 1987. By that time, DEC had shipped over one million VT220s.<ref name="computerworld19870831_vt320">{{ cite magazine | url=https://archive.org/details/sim_computerworld_1987-08-31_21_35/page/17/mode/1up | first1=David | last1=Bright | title=DEC VT320 late, but low price surprises | magazine=Computerworld | date=31 August 1987 | access-date=26 January 2023 | pages=16 }}</ref>
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