From VGA to HDMI Guide

This article is for you if you are an IT administrator, educator or a tech savvy person who has to deal with different types of audio/video technology and wants to better understand what is involved in, say, connecting VGA to HDMI.
The article will explain the difference between such formats as VGA, DVI, HDMI, and DisplayPort and the most effective ways to connect different kinds of technology in the most effective and cost-efficient ways.

Computer display standards

VGA, DVI, HDMI and DisplayPort are computer display standards. A standard is typically associated with certain video connectors, expansion cards and monitors.

Analog vs digital

VGA

VGA is short for Video Graphic Array. Originally, it described display hardware manufactured by IBM and used in IBM PS/2 line of personal computers starting from 1987.

DVI

DVI is short for Digital Visual Interface. It was created in 1999 by Digital Display Working Group with the goal of transmitting uncompressed digital video between displays and display controllers, such as computers and gaming consoles. Notice that the term DVI applies only to a video display interface. Unlike VGA, the term was never associated with screen resolutions or computer display standards.

HDMI

HDMI is short for High-Definition Multimedia Interface. It is a proprietary interface that combines the transmission of both digital audio and digital video from an HDMI-compatible source.

DisplayPort

DisplayPort was created in 2006 by Dell and later standardized by the Video Electronics Standards Association (VESA). Just like HDMI, it was introduced to replace VGA and DVI standards. Also just like HDMI, DisplayPort is a digital interface that can transport both audio and video.

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