Screen standards – Texas Instruments TravelMate 2000 User Manual

Page 173

Advertising
background image

Screen Standards

VGA (Video Graphics Array)

The VGA standard supports 640-by-480 pixel monochrome or 16-color graphics and 320-by-200 pixel 256-
color graphics, and uses an 8-by-16 pixel character box for text display.

The TravelMate 2000 LCD screen supports VGA by displaying text in an 80-column. by 25-line text display
with 16 shades of gray in two modes:

Standard

Expanded

Character box:

8 x 16

8 x 16

Display area:

640 x 400

640 x 480

Color graphics are supported by displaying colors as 16 shades of gray in three modes:

Resolution: 320 by 200 pixels with 16 shades of gray

Standard

One pixel is converted to a 2 x 2 cell
Display area: 640 x 400

Expanded

Every fifth line is displayed twice
One pixel is converted to a 2 x 2 or 2 x 4 cell (every fifth line)
Display area: 640 x 480

Resolution 640 by 480 with two or 16 shades of gray

Standard

One pixel is a 1 x 1 cell
Display area: 640 x 480

J-4 Screen Standards

Advertising