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RAMDAC. RAM Digital to Analog Converter.
Refresh Rate. Also called Vertical Scan Rate, the
speed at which the screen is repainted. Typically,
color displays must be refreshed at 60 times per
second. Usually, the faster the refresh rate, the
less flicker a monitor has (normally defined in Hz).
Register Level Compatibility. Complete
compatibility to the hardware level.
RGB Monitor. Red/Green/Blue. A CGA compatible
monitor limited to a 15.750KHz horizontal scan
rate.
Scan rate. The frequency in Hertz (Hz) at which
the monitor is scanned horizontally. Generally, the
higher the scan rate, the higher the resolution.
TSR. Terminate and Stay Resident. A program that
remains in memory after it has been loaded.
TTL. Transistor-Transistor Logic; a fast,
reasonable-cost type of integrated circuit used in
some monitors.
TTL Monitor. Video and synchronization signals
(all digital) are on separate lines and have TTL
compatible voltage levels.
VESA. Video Electronics Standards Association.
VGA. (Video Graphics Array) Analog graphics
standard introduced with the IBM PS/2 series.
Backwards compatible with EGA at the BIOS level,
but provides higher resolutions. Supports a
maximum resolution of 640 x 480 pixels in 16
colors out of a palette of 262,144 colors.
Glossary
