Glossary
115
Sync. The signals output from computers have a specific frequency.
If the projector frequency does not match this frequency, the
resulting images are not of a good quality.
The process of matching the phases of these signals (the relative
position of the crests and the troughs in the signal) is called
Synchronization.
If the signals are not synchronized, flickering, blurriness, and
horizontal interference occur.
VGA A screen size standard with a resolution of 640 (horizontal) ×
480 (vertical) dots.
XGA A screen size standard with a resolution of 1,024 (horizontal) ×
768 (vertical) dots.
WXGA A screen size standard with a resolution of 1,280 (horizontal) ×
800 (vertical) dots.
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