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The maximum screen resolutions of the different video
standards is summarized below, along with their color and
graphics features:
HGC:
maximum dot resolution:
720x350
maximum text display:
80 columns x 25 lines
colors:
monochrome green or amber
CGA:
dot resolution:
640 x 200
maximum text display:
80 columns x 25 lines
colors:
2 of 16 colors (640 x 200)
4 of 16 colors (320 x 200)
EGA:
dot resolution:
640x350
maximum text display:
80 columns x43 lines
colors:
16 of 64 colors
VGA:
dot resolution:
720x400 (text only)
640x480 (text and graphics)
maximum text display:
80 columns x50 lines
colors:
16 of 262, 144
256 of 262, 144 (320x200 res)
Video Monitor Systems
C-3