Sunday, 4 October 2015

Beyond VGA – Super VGA



As VGA became the accepted new standard, boards manufacturers first concentrated on building  compatible  boards, then they turned  their attention  to expanding  on the capabilities  of basic VGA. The highest  resolution supported  by a VGA board  is 640x480 in 16 colourss from a palette of 256. This is adequate for general work but  still higher  resolution  is  required  for applications such us  DTP,  CAD and illustration. Even general applications working  under Windows or OS/2 benefit from resolutions  above 640x480.
The need for these  higher resolutions has resulted  in the adoption of three additional standard modes.
Ø  800 x 600 in 16 or 256 colourss
Ø  640 x 480 in 256 colourss

Ø  1024 x 768 in 16 or 256 colourss

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