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Display standard




<hardware> IBM and others have introduced a bewildering plethora of graphics and text display standards for IBM PCs.

The standards are mostly implemented by plugging in a video display board (or "graphics adaptor") and connecting the appropriate monitor to it.

Each new standard subsumes its predecessors.

For example, an EGA board can also do CGA and MDA.

With the PS/2, IBM introduced the VGA standard and built it into the main system board motherboard. VGA is also available as a plug-in board for PCs from third-party vendors. Also with the PS/2, IBM introduced the 8514 high-resolution graphics standard.

An 8514 adaptor board plugs into the PS/2, providing a dual-monitor capability.

Graphics software has to support the major IBM graphics standards and many non-IBM, proprietary standards for high-resolution displays.

Either software vendors provide display drivers, or display vendors provide drivers for the software package.

In either case, switching software or switching display systems is fraught with compatibility problems.

Display



Resolution Colours Sponsor Systems

MDA



720x350 T

2

IBM



PC CGA



320x200

4

IBM



PC EGA



640x350 16

IBM



PC PGA



640x480 256

IBM



PC

Hercules

729x348

2

non-IBM PC

MCGA



720x400 T 320x200 G 256 PS/2

VGA



720x400 T 640x480 G 16

SVGA



800x600 16 VESA

XVGA

1024x768 256 (IBM name: 8514)

T: text,

G: graphics.

More colours are available from third-party vendors for some display types.

See also MDA, CGA, EGA, PGA, Hercules, MCGA, VGA, SVGA, 8514, VESA.





< Previous Terms Terms Containing display standard Next Terms >
disman
display
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Display Screen Equipment
8514
Color Graphics Adapter
display standards
Enhanced Graphics Adapter
eXtended Graphics Array
display standards
display terminal
Dissociated Press
distfix
Distributed Component Object Model


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