VT100

VT100
DEC VT100 terminal

The VT100 is a video terminal that was made by Digital Equipment Corporation (DEC). Its detailed attributes became the de facto standard for terminal emulators.

Contents

History

It was introduced in August 1978, following its predecessor, the VT52, and communicated with its host system over serial lines using the ASCII character set and control sequences (a.k.a. escape sequences) standardized by ANSI. The VT100 was also the first Digital mass-market terminal to incorporate "graphic renditions" (blinking, bolding, reverse video, and underlining) as well as a selectable 80 or 132 column display. All setup of the VT100 was accomplished using interactive displays presented on the screen; the setup data was stored in non-volatile memory within the terminal. The VT100 also introduced an additional character set that allowed the drawing of on-screen forms.

The control sequences used by the VT100 family are based on the ANSI X3.64 standard, later ECMA-48 and ISO/IEC 6429. These are sometimes referred to as ANSI escape codes. The VT100 was not the first terminal to be based on X3.64—The Heath Company had a microprocessor-based video terminal, the Heathkit H-19 (H19), that implemented a subset of the standard proposed by ANSI in X3.64.[1] In addition, the VT100 provided backwards compatibility for VT52 users, with support for the VT52 control sequences.[2]

In 1983, the VT100 was replaced by the more-powerful VT200 series terminals such as the VT220.

In August 1995 the terminal business of Digital was sold to Boundless Technologies.[3]

Variants

VT101

The VT100 was also the first of Digital's terminals to be based upon an industry-standard microprocessor (in this case, the Intel 8080). Options could be added to the terminal to support an external printer, additional graphic renditions, and more memory (the "AVO" 'Advanced' Video Option — without this option, the VT100 could not display a full 24 lines of text when in 132 column mode). The VT100 became a platform on which Digital constructed related products.

The VT101 and VT102 were cost-reduced non-expandable follow-on products, with the VT102 including the AVO and serial printer port options of the VT100. The VT105 contained a simple graphics subsystem mostly-compatible with the earlier VT55. The VT125 added an implementation of the byte-efficient Remote Graphic Instruction Set (ReGIS.) The VT103 included a backplane socket for an LSI-11 minicomputer board and supported dual TU58 DECtape II block addressable tape drive which behaved like a very slow disk drive. The VT180 (codenamed "Robin") added a single-board microcomputer using a Zilog Z80 to run CP/M. The VT278 added a built-in PDP-8 processor, allowing the terminal to run Digital's WPS-8 word processing software.

References

  1. ^ Shuford, Richard S. (2005), DEC Video Terminals—The VT100 and Its Successors, http://www.cs.utk.edu/~shuford/terminal/dec.html, retrieved 2008-09-12 
  2. ^ http://ascii-table.com/ansi-escape-sequences-vt-100.php
  3. ^ http://www.boundless.com/history.html

External links

v · d · eDigital Equipment Corporation video terminals
VT05 (1970) • VT50/VT52 (1975) • VT55 • VT62 • VT100 (1978) • VT101 • VT102 • VT103 • VT105 • VT110 • VT125 • VT131 • VT132 • VT180 • VT220 (1983) • VT240 • VT241 VT320 (1987) • VT330 • VT340 • VT340+ • VT420 (1990) • VT510 (1993) • VT520 (1994) • VT525 • VT LAN40

Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • VT100 — ist ein ASCII Computer Terminal, gebaut von DEC in den Jahren 1979 bis 1983. Es konnte auf seinem Monochrom Bildschirm 24 Zeilen zu 80 US ASCII Zeichen darstellen. Die Ausgabe zeichenorientierter Grafik (Semigrafik), inverser, blinkender oder… …   Deutsch Wikipedia

  • VT100 — DEC VT100 VT100  текстовый компьютерный терминал производства DEC, набор команд которого стал стандартом …   Википедия

  • VT100 — El VT100 de Digital Equipment Corporation (DEC). VT100 es una terminal de vídeo fabricada originalmente por Digital Equipment Corporation (DEC). Se convirtió en el sistema estándar de serie para los emuladores de terminal. Fue introducida en… …   Wikipedia Español

  • VT100 — Terminal VT180. Le VT100 était un terminal informatique à écran cathodique produit par Digital Equipment Corporation (DEC), qui est devenu un standard de fait dans le domaine des terminaux. Le VT100 a été commercialisé en août 1978, en tant que… …   Wikipédia en Français

  • VT100 — VAX Terminal Modell 100, von DEC entwickeltes (Quasi Standard )Character Terminal mit (erstmals) per CSI Sequenz absetzbaren Steuerkommandos, oft als Emulation in anderen Terminals vorhandenen …   Acronyms

  • VT100 — ● sg. m. ►NORM Virtual Terminal 100, développé par DEC pour se connecter à ses mainframes. (++) …   Dictionnaire d'informatique francophone

  • VT100 — VAX Terminal Modell 100, von DEC entwickeltes (Quasi Standard )Character Terminal mit (erstmals) per CSI Sequenz absetzbaren Steuerkommandos, oft als Emulation in anderen Terminals vorhandenen …   Acronyms von A bis Z

  • VT100 — A smart terminal, which is emulated by many communications programs. It uses ANSI codes. See also ANSI …   Dictionary of telecommunications

  • VT100 — abbr. Virtual Terminal 100 (DEC) Syn: VT 100 …   United dictionary of abbreviations and acronyms

  • программа эмуляции терминалов типа VT100/VT200 — — [Е.С.Алексеев, А.А.Мячев. Англо русский толковый словарь по системотехнике ЭВМ. Москва 1993] Тематики информационные технологии в целом EN VT100/VT200 terminal emulator …   Справочник технического переводчика

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”