Video Graphics Array
Video Graphics Array (VGA) refers specifically to the display hardware first introduced with the IBM PS/2 line of computers in 1987, but through its widespread adoption has also come to mean either an analog computer display standard, the 15-pin D-subminiature VGA connector or the 640x480 resolution itself. While this resolution was superseded in the personal computer market in the 1990s, mobile devices have only caught up in the last few years.
VGA was the last IBM graphics standard to which the majority of PC clone manufacturers conformed, making it today (2014) the lowest common denominator that virtually all post-1990 PC graphics hardware can be expected to implement. Versions of Microsoft Windows released before Windows Vista, for example, display their splash screens while still in VGA mode, meaning that the screens appear in reduced resolution and with reduced color depth. Vista and newer versions make use of the VESA BIOS Extension supported by newer graphics hardware so that their splash screens appear in a higher resolution.
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