Misplaced Pages

VT220

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.

The VT200 series is a family of computer terminals introduced by Digital Equipment Corporation (DEC) in November 1983. 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 X.364 . Among its major upgrades was a number of international character sets, as well as the ability to define new character sets.

#153846

35-464: The VT200 series was extremely successful in the market. Released at $ 1,295, 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

70-648: A stock swap . Under Wyse's ownership, Amdek released a series of IBM PC compatibles while continuing to offer their mainstay monitors. Wyse kept the Amdek brand going into the mid-1990s. In June 1987, Wyse acquired Fremont CA based terminal manufacturer Link Technologies Inc. in exchange for an undisclosed number of Wyse common shares. Wyse was an early innovator in off-shore electronics production, with its products being built in Taiwan in company owned facilities. In 1990 Dr. Morris Chang organized Channel International,

105-436: A 15 degree angle. Because it was lower than head height, the result was an especially ergonomic terminal. On the rear bottom of the case was a carrying handle that could also be used to angle the monitor more foward. An extendable post could do so to even greater angles, allowing the monitor to face directly forward. The LK201 keyboard supplied with the VT220 was one of the first full-length, low-profile keyboards available; it

140-430: A Taiwan consortium, which gathered business owners together and was a booster for Taiwanese individuals owning U.S. companies. In 1990, Channel International acquired Wyse. From 1990 to 1994 Wyse focused on PCs with CPU upgradability. Wyse created a proprietary upgradability concept called Modular Systems Architecture, or MSA. In October 1992, Wyse became ISO 9001:2000 certified. In the mid-1990s Wyse Taiwan became

175-543: A backward question mark used to represent undefined characters. The VT200s included the ability to make minor changes to the character set using the National Replacement Character Set (NRCS) concept. When operating on an 8-bit clean link up to 256 character codes were available, which included a full set of European characters. But when operating on a typical 7-bit link, only 128 were available, and only 96 of these produced display output as

210-596: A larger screen and higher resolution than competitor products at the time. Following the WY50 was the WY60, the best-selling general purpose terminal of all time. In addition to standard character-mode operation, the WY60 supported box graphics that could be used to produce more attractive displays. The Wyse 99GT and 160 terminals added graphical capability through Tektronix 4014 emulation. The WY325 and 375 models added color support with Tektronix graphics. In 1984, Wyse entered

245-426: A number of different character sets that could be selected among using a series of ANSI commands. Glyphs were formed within a 10 by 10 grid. The terminal shipped with a total of 288 characters in its ROM, each one formed from an 8 by 10 pixel glyph. Using only 8 of the columns left space between the characters. The characters included the 96 printable ASCII characters, 67 Display Controls, 32 DEC Special Graphics, and

280-467: A patent (# 5918039) for the thin client design. In 1997, Microsoft released Windows NT Terminal Service Edition, which supported the Wyse thin clients. After the thin clients were well received by the market, Wyse introduced several additional models, including stand-alone (Winterm 2300), LCD monitor-integrated (Winterm 2600), and the tablet-shaped mobile Winterm 2900 and 2930 models. In 1997, Wyse introduced

315-577: A single-chip microcontroller version of the PDP-11 minicomputer . The VT241 is the color version of the VT240, consisting of the same V240 base unit with VR-241 color monitor. A VT240 can be upgraded to a VT241 by replacing the monitor and the cable. The VT220 was designed to be compatible with the VT100 , but added features to make it more suitable for an international market. This was accomplished by including

350-698: Is headquartered in Silicon Valley in Santa Clara, California . It also has development centers in India, and Beijing, China. It has sales offices around the United States and in: Wyse has published research on the environmental benefits of cloud client computing. According to the company, to minimize environmental impact, their cloud client computing products are smaller than that of competitors. Up to 90 percent of Wyse products can be recycled, and

385-467: Is partnered with IT vendors such as Citrix , IBM , Microsoft , and VMware . On April 2, 2012, Dell and Wyse announced that Dell intended to take over the company. With this acquisition Dell surpassed their rival Hewlett-Packard in the market for thin clients. On May 25, 2012, Dell informed the market that it had completed the acquisition. Wyse Technology was founded in 1981 by Garwing Wu, Bernard Tse, and Grace Tse. The company became famous in

SECTION 10

#1732772699154

420-554: The IBM PC/AT based on the 80286 and 80386 , which were top sellers. Wyse sold through 2-tier distribution, which limited growth in the late 1980s as mail order companies like Dell and Gateway entered the marketplace. In 1984 Wyse became one of the leaders in the general purpose text (GPT) terminal industry and on August 17, 1984, went public on the New York Stock Exchange . In the following years, Wyse added

455-530: The VT50s before them, had been packaged in relatively large cases that provided room for expansion systems. The VT200s abandoned this concept, and wrapped the much smaller 1980s-era electronics tightly around the CRT. The result was a truncated pyramidal case with the apex at the back, only slightly larger than the CRT. This made it much easier to fit the terminal on a desk. Normally the monitor sat facing upward at about

490-539: The personal computer marketplace. The first of these was the Wyse 1000, a computer based on the Intel 80186 (which did not see huge volumes because its integrated hardware was incompatible with the hardware used in the original IBM PC). Next came the WYSEpc, an IBM -compatible computer based on the 8088 processor, which had a good following due to its slim-line design. Later, Wyse introduced personal computers compatible with

525-488: The telegraph system but became popular on computers due to the early use of Teletype Model 33 's as ad hoc terminals. A standard 25-pin D-connector was also provided for RS-232. Only one of the two ports could be in use at a given time. Later DEC terminals would replace both of these with their proprietary Modified Modular Jack (MMJ) connectors. Another version of the terminal, the VT240, used DEC's own DEC T-11 ,

560-416: The 1980s as a manufacturer of character terminals . Most of these terminals can emulate several other terminal types in addition to their native escape sequences . These terminals were often used with library card catalogs such as Dynix . In 1983, Wyse began shipping the WY50, a terminal that was priced some 44 percent lower than its nearest competitor. It became their first big-selling product, and had

595-475: The PC product line Wyse pc3216. The Wyse 3216 was based on Intel's newest 386 chip. It sold for $ 1,500 less than a comparable Compaq DeskPro, $ 2,000 less than an IBM System 80, and performed at a higher speed than both. In 1989, Wyse developed LAN -attached communication devices. In January 1986, Wyse acquired Amdek Corporation , a popular maker of aftermarket personal computer monitors, for $ 8.5 million in

630-670: The US's hash character, # , with the pound sign, £ . The terminal included 14 such replacement sets, most of which swapped out about a dozen characters. This eliminated the need to ship 14 versions of the terminal, or to include 14 different 7-bit character sets in ROM. Additionally, the VT200s allowed for another 96 characters in the Dynamically Redefined Character Set (DRCS), which could be downloaded from

665-422: The advanced display capability of Windows PCs. A year of R&D resulted in the most advanced terminals Wyse had developed to date. They worked on enabling them to support the graphics and capabilities needed to display Microsoft Windows and Internet applications. In late 1994, the company developed two thin client prototypes, and selected Citrix , then a small company, to provide the protocol and server side of

700-515: The company significantly expanded research and development. In August 2007, Wyse recapitalized , with overseas investors regaining the controlling interest from Garnett & Helfrich Capital. In March 2008 the company formalized a partnership with Novell . In October of that year, Wyse formed a global partnership with IBM under the Global Alliance Agreement. In August 2010, Wyse created its Mobile Cloud Business Unit with

735-496: The controlling interest of Wyse was acquired by Garnett & Helfrich Capital, a private equity firm specializing in venture buyouts. In 2005, Wyse, working closely with Citrix, Microsoft, and VMware , expanded thin clients to support the newly introduced virtual desktop infrastructure (VDI). In April, Wyse and IBM signed a Joint Initiative Agreement (JIA). Tarkan Maner was appointed CEO in February 2007. Under Maner,

SECTION 20

#1732772699154

770-457: The design of the first Winterm products. They are also holders of the first thin client patent. McNaught later architected the idea of a Citrix-focused "Zero Client", Called Wyse Xenith. Citrix and Wyse partnered to make the Xenith one of the best-selling thin-clients of all time, based on its ease of use, support of Citrix key features, and improved data security capabilities. Wyse Technology

805-682: The first thin-client remote management software system, Wyse Remote Administrator. In 1999, Wyse Technology once again went public, but this time on the Taiwan Stock Exchange (TSE). In 2000 Wyse acquired Netier Technologies of Texas, and turned Netier's Rapport thin device management software into the Wyse Device Manager. In 2003 Wyse went private and company shareholders reorganized the company, selling assets such as real estate and company-owned manufacturing facilities in favor of contract manufacturing. In April 2005

840-426: The host computer. Data for the glyphs was sent by encoding a set of six vertical pixels into a single character code, and then sending many of these Sixels to the terminal, which decoded them into the character set memory. In later models, the same sixel concept would be used to send bitmapped graphics as well. Character graphics were a common example of these downloaded sets. Prior to the VT220, if an Escape key

875-716: The introduction of Wyse PocketCloud. The mobile cloud app allows users to access their desktop on iOS or Android devices. In the same month, Wyse became ISO 9001:2008 certified, and in November became ISO 14001:2004 certified and announced a "Strategic Collaboration Partnership with Cisco. The company introduced zero clients in 2010. According to the IDC , as of 2011 Wyse is an international leader in what are called "enterprise devices" (terminal clients and thin clients combined). In April 2012, Dell announced an agreement to purchase Wyse for an undisclosed amount. The acquisition

910-510: The inverted-T shape of the arrow cluster, the navigation keys above it, and the numeric keypad off to its right. Eventually the popularity of the IBM PC would lead to the Model M layout becoming standardized by ANSI and ISO. Through those standards, minor variations of the VT220's keyboard layout have dominated keyboard design ever since. Wyse Wyse Technology, Inc. , or simply Wyse ,

945-440: The model. The machines differed from traditional text-mode terminals by supporting modern GUI applications using a mouse and windowing systems . The clients are able to access these applications using protocols that send drawing commands or raw pixel data (instead of strings of text characters) over the data connection. Because of the greater bandwidth this requires these machines typically use ethernet connections to

980-408: The parent company of Wyse Technology. As the PC and server industry became more competitive, in 1994 Wyse management began to focus on making the next generation of terminals. Four employees were directed to investigate and chart the next product course for the company. In 1994, executives Curt Schwebke and Jeff McNaught proposed a new type of terminal that would combine the low costs of terminals with

1015-522: The rest were control characters . This was not enough characters to handle all European languages. Most terminals solved this by shipping multiple complete character sets in ROM , but there was a cost in doing so. DEC's solution to this problem, NRCS, allowed individual characters glyphs in the base set of 96 7-bit characters to be swapped out. For instance, the British set made a single substitution, replacing

1050-413: The same by releasing the less-expensive $ 545 VT300 series in 1987. By that time, DEC had shipped over one million VT220s. The VT220 improved on the earlier VT100 series of terminals with a redesigned keyboard, much smaller physical packaging, and a faster microprocessor, the Intel 8051 microcontroller . The VT220 was available with CRTs that used white, green, or amber phosphors . The VT100s, like

1085-712: The server, rather than the RS-232 links used in the past. In November 1995, Citrix and Wyse shared a booth at the Comdex tradeshow. Wyse introduced the Winterm windows terminal (now referred to as a thin client) models 2000 and 2500. Citrix introduced WinFrame , the Windows NT -based “Windows mainframe” software it connected to. At the show, the Wyse Winterm was awarded the “Best of Comdex” award. Later, Wyse secured

VT220 - Misplaced Pages Continue

1120-635: Was an independent American manufacturer of cloud computing systems . Wyse are best remembered for their video terminal line introduced in the 1980s, which competed with the market-leading Digital . They also had a successful line of IBM PC compatible workstations in the mid-to-late 1980s. But starting late in the decade, Wyse were outcompeted by companies such as eventual parent Dell. Current products include thin client hardware and software as well as desktop virtualization solutions. Other products include cloud software-supporting desktop computers , laptops , and mobile devices. Dell Cloud Client Computing

1155-590: Was completed on May 25, 2012. Martin Eberhard began his career as an electrical engineer at Wyse Technology, where he designed the WY-30 ASCII computer terminal as his first product. Eberhard went on to be a founder of Tesla Motors . David Dix worked first on the very first Wyse terminals and later the high end personal computers, as well as at HP, prior to Wyse, and is now at ShoreTel . Wyse CTO Curt Schwebke and CMO Jeff McNaught prototyped and led

1190-506: Was developed at DEC's Roxbury , Massachusetts facility. It was much smaller and lighter than the VT100s version, and connected to the terminal using a lighter and more flexible coiled cable and a telephone jack connector. The VT200s were the last DEC terminals to provide a 20mA current loop serial interface (using a 8-pin Molex -style connector), an older standard originally developed for

1225-577: Was present, it was positioned in the upper left corner of the keyboard. The VT220 moved it to the typical location for the f11 key, in the middle of the top row of keys. For users of the TECO editor, in which it is heavily used, this was inconvenient. In 1983-1984, during the design phase of the IBM Model M keyboard, the VT220 was a new and very popular product. IBM's design team chose to emulate its LK201 keyboard layout. Key innovations that IBM copied were

#153846