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Glossary of terms used
in the ClassTech web pages
DVD
Digitial Versatile Disc, or Digital Video Disc. A double sided disc that
is the same size as a compact disc (5 inches), but holds over four times the
amount of information. Typical DVD usage is for movies due to superior sound
and video quality over VHS video tape.
LaserDisc, LD
A double sided disc that is about the size of a record (12 inches). LD's
are an older technology than DVD's, and often require both sides of a disc
to hold a movie. ClassTech LD players require someone to flip the disc in
this case. LD's have better sound and video quality than VHS video tapes.
Monitor
All televisions are referred to as 'Monitors' at ClassTech. Technically a
'Monitor' is a TV that does not have the ability to tune in stations.
Projector (computer, video)
The term 'video projector' is used loosely at ClassTech to describe any piece
of equipment that displays a video or computer source on a projection screen.
'Computer projector' refers specifically to the newer video projectors that
can handle the higher resolutions necessary for computer support.
VGA
Video Graphics Array. This is a reference to a computer resolution of 640
pixels wide by 480 pixels high. VGA
projectors are no longer provided for computer requests.
XGA
eXtended Graphics Array. This is a reference to a computer resolution of
1024 pixels wide by 768 pixels high. The XGA projectors available from Classtech
are 3000 lumens or brighter, and can typically handle resolutions from 640x480
to 1600x1200 in emulation mode. XGA projectors are permanently available in over 60 locations.
SXGA
Super eXtended Graphics Array. This is a reference to a computer resolution
of 1280 pixels wide by 1024 pixels high. The projectors in Hoyt and Hubbell auditoriums are currently the only SXGA native projectors available in the
River Campus classrooms.
UXGA
Ultra eXtended Graphics Array. This is a reference to a computer resolution
of 1600 pixels wide by 1200 pixels high. Most projectors offered by Classroom Technology will display this resolution.
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