Dell POWEREDGE 4300 - Page 152

16 Dell PowerEdge 4300 Systems User’s Guide
extended memory are utilities included in
MS-DOS.
9
Abbreviation for volt(s).
9$&
Abbreviation for volt(s) alternating
current.
9&&,
Abbreviation for Voluntary Control Council
for Interference.
9'&
Abbreviation for volt(s) direct current.
9'(
Abbreviation for
Verband Deutscher
Elektrotechniker
.
9(6$
Acronym for Video Electronics Standards
Association.
9*$
Abbreviation for video graphics array. VGA
and SVGA are video standards for video
adapters with greater resolution and color
display capabilities than EGA and CGA,
the previous standards.
To display a program at a specific resolu-
tion, you must install the appropriate
video drivers and your monitor must sup-
port the resolution. Similarly, the number
of colors that a program can display de-
pends on the capabilities of the monitor,
the video driver, and the amount of mem-
ory installed for the video adapter.
9*$IHDWXUHFRQQHFWRU
On some systems with a built-in VGA
video adapter, a VGA feature connector
allows you to add an enhancement adapt-
er, such as a video accelerator, to your
computer. A VGA feature connector can
also be called a
VGA pass-through
connector
.
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The logical circuitry that provides—in
combination with the monitor or display—
your computer’s video capabilities. A
video adapter may support more or fewer
features than a specific monitor offers.
Typically, a video adapter comes with
video drivers for displaying popular
application programs and operating envi-
ronments in a variety of video modes.
On most current Dell computers, a video
adapter is integrated into the system
board. Also available are many video
adapter cards that plug into an expansion-
card connector.
Video adapters can include memory sep-
arate from RAM on the system board. The
amount of video memory, along with the
adapter’s video drivers, may affect the
number of colors that can be simulta-
neously displayed. Video adapters can
also include their own coprocessor chip
for faster graphics rendering.
YLGHRGULYHU
Graphics-mode application programs and
operating environments, such as Win-
dows, often require video drivers to
display at a chosen resolution with the de-
sired number of colors. A program may
include some “generic” video drivers.
Any additional video drivers may need to
match the video adapter; you can find
these drivers on a separate diskette with
your computer or video adapter.
YLGHRPHPRU\
Most VGA and SVGA video adapters in-
clude VRAM or DRAM memory chips in
addition to your computer’s RAM. The
amount of video memory installed prima-
rily influences the number of colors that a
program can display (with the appropriate
video drivers and monitor capability).
YLGHRPRGH
Video adapters normally support multiple
text and graphics display modes. Charac-
ter-based software (such as MS-DOS)
displays in text modes that can be defined
as
x
columns by
y
rows of characters.
Graphics-based software (such as Win-
dows) displays in graphics modes that can
be defined as
x
horizontal by
y
vertical pixels
by
z
colors.
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