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Screen Standards
This appendix summarizes the screen standards supported
by your computer’s internal display adapter.
VGA (Video Graphics Array)
The VGA standard supports 640-by-480 pixel monochrome
or 16 of 64 color graphics and 320-by-200 pixel 256-color
graphics. The
VGA standard uses an 8-by-16 pixel character
box for text display.
Your computer’s
LCD supports VGA by displaying text in an
80-column by 25-line text display with 16 shades of gray
(selectable from 64 shades) in an 8-by-16 pixel character
box in a 640-by-400 pixel area centered on the display.
Your computer also supports color graphics by displaying
colors as 64 shades of gray in two modes:
Resolution: 320-by-200 pixels with 256 shades of gray mapped
into 64 shades
One pixel is converted to a 2 × 2 cell
Display area: 640 × 400
Resolution: 640-by-480 with 64 shades of gray
One pixel is displayed as a 1 × 1 cell
Display area: 640 × 480
Screen Standards H-1