Dell PowerEdge 4300 User Manual page 153

Video resolution—640 x 480, for exam-
ple—is expressed as the number of pixels
across by the number of pixels up and
down. To display a program at a specific
graphics resolution, you must install the
appropriate video drivers and your moni-
tor must support the resolution.
An operating mode supported by Intel386
or higher microprocessors, virtual 8086
mode allows operating environments—
such as Windows—to run multiple pro-
grams in separate 1-MB sections of
memory. Each 1-MB section is called a
virtual machine .
A method for increasing addressable
RAM by using the hard-disk drive.
(MS-DOS does not support true virtual
memory, which must be implemented at
the operating-system level.) For example,
in a computer with 8 MB of RAM and
16 MB of virtual memory set up on the
hard-disk drive, the operating system
would manage the system as though it
had 24 MB of physical RAM.
A self-starting program designed to incon-
venience you. Virus programs have been
known to corrupt the files stored on a
hard-disk drive or to replicate themselves
until a system or network runs out of
memory.
The most common way that virus pro-
grams move from one system to another
is via "infected" diskettes, from which
they copy themselves to the hard-disk
drive. To guard against virus programs,
you should do the following:
Periodically run a virus-checking util-
ity on your computer's hard-disk
drive.
Always run a virus-checking utility on
any diskettes (including commer-
cially sold software) before using
them.
An abbreviation for VESA local bus. A
standard for local bus implementation
developed by the Video Electronics Stan-
dards Association.
Abbreviation for very-large-scale
integration.
Abbreviation for peak-point voltage.
Abbreviation for video random-access
memory. Some video adapters use VRAM
chips (or a combination of VRAM and
DRAM) to improve video performance.
VRAM is dual-ported, allowing the video
adapter to update the screen and receive
new image data at the same time.
Abbreviation for watt(s).
When you start Windows, it consults the
win.ini file to determine a variety of options
for the Windows operating environment.
Among other things, the win.ini file records
what printer(s) and fonts are installed for
Windows. The win.ini file also usually
includes sections that contain optional set-
tings for Windows application programs that
are installed on the hard-disk drive.
Revising the Control Panel settings or run-
ning the Windows Setup program may
change options in the win.ini file. On other
occasions, you may need to change or add
options to the win.ini file manually with a
text editor such as Notepad.
Read-only files are said to be write-
protected . You can write-protect a 3.5-inch
diskette by sliding its write-protect tab to the
open position; you can write-protect a
5.25-inch diskette by placing an adhesive
label over its write-protect notch.
Abbreviation for World Wide Web.
Glossary 17