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'''Digital Visual Interface''' ('''DVI''') is a [[video display interface]] developed by the [[Digital Display Working Group]] (DDWG). The [[Digital data|digital]] interface is used to connect a video source, such as a [[video display controller]], to a [[display device]], such as a [[computer monitor]]. It was developed with the intention of creating an industry standard for the transfer of [[
DVI devices manufactured as DVI-I have support for analog connections, and are compatible with the analog [[VGA]] interface<ref name="2000 Press Release">{{cite news|url=http://www.ddwg.org/articles.asp?id=22|title=Digital Visual Interface adoption accelerates as industry prepares for next wave of DVI-compliant products|date=February 16, 2000|publisher=DDWG, copy preserved by [[Internet Archive]]|access-date=29 March 2012|url-status=bot: unknown|archive-url=https://web.archive.org/web/20070828233809/http://www.ddwg.org/articles.asp?id=22|archive-date=28 August 2007}}</ref> by including VGA pins, while DVI-D devices are digital-only. This compatibility, along with other advantages, led to its widespread acceptance over competing digital display standards [[Plug and Display]] (P&D) and [[VESA Digital Flat Panel|Digital Flat Panel]] (DFP).<ref name="Competing standards">{{cite web|url=https://www.tomshardware.com/reviews/tft-guide-part-3,117.html|title=TFT Guide Part 3 - Digital Interfaces|last=Eiden|first=Hermann|date=July 7, 1999|publisher=TomsHardware.com|access-date=29 March 2012}}</ref> Although DVI is predominantly associated with computers, it is sometimes used in other consumer electronics such as [[television set]]s and [[DVD player]]s.
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*''DVI-A'' (analog only)
Most DVI connector types—the exception is DVI-A—have pins that pass digital video signals. These come in two varieties: single link and dual link. Single link DVI employs a single transmitter with a TMDS clock up to 165 MHz that supports resolutions up to 1920 × 1200 at 60 Hz. Dual link DVI adds six pins, at the center of the connector, for a second transmitter increasing the bandwidth and supporting resolutions up to 2560 × 1600 at 60 Hz.<ref>{{cite web|url=http://www.anandtech.com/show/2184/2|archive-url=https://web.archive.org/web/20100520033457/http://www.anandtech.com/show/2184/2|url-status=dead|archive-date=May 20, 2010|title=Dell 2407WFP and 3007WFP LCD Comparison|last=Walton|first=Jarred|date=March 2, 2007|publisher=AnandTech|access-date=November 7, 2013}}</ref> A connector with these additional pins is sometimes referred to as DVI-DL (dual link). Dual link should not be confused with ''[[Multi-monitor|dual display]]'' (also known as ''dual head''), which is a configuration consisting of a single computer connected to two monitors, sometimes using a [[DMS-59]] connector for two single link DVI connections.
In addition to digital, some DVI connectors also have pins that pass an analog signal, which can be used to connect an analog monitor. The analog pins are the four that surround the flat blade on a DVI-I or DVI-A connector. A [[Video Graphics Array|VGA]] monitor, for example, can be connected to a video source with DVI-I through the use of a passive adapter. Since the analog pins are directly compatible with VGA signaling, passive adapters are simple and cheap to produce, providing a cost-effective solution to support VGA on DVI. The long flat pin on a DVI-I connector is wider than the same pin on a DVI-D connector, so even if the four analog pins were manually removed, it still wouldn't be possible to connect a male DVI-I to a female DVI-D. It is possible, however, to join a male DVI-D connector with a female DVI-I connector.<ref name="A+ Study Guide book">{{cite book|last1=Docter|first1=Quentin|last2=Dulaney|first2=Emmett|last3=Skandier|first3=Toby|title=CompTIA A+ Complete Deluxe Study Guide: Exams 220-801 and 220-802|year=2012|publisher=John Wiley & Sons, Inc.|___location=Indianapolis, Indiana|isbn=978-1118324066}}</ref>
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