Dell LATITUDE C510 - Manual (Page 169)

video memory - Memory that consists of memory chips dedicated to video functions. Video memory is
usually faster than system memory. The amount of video memory installed primarily influences the number
of colors that a program can display.
video mode - A mode that describes how text and graphics are displayed on a monitor. Graphics-based
software, such as the Windows operating system, displays in video modes that can be defined as x horizontal
pixels by y vertical pixels by z colors. Character-based software, such as text editors, display in video modes
that can be defined as x columns by y rows of characters.
video resolution - See resolution.
virus - A program that is designed to inconvenience you or to destroy data stored on your computer. A
virus program moves from one computer to another via an infected disk, software downloaded from the
Internet, or e-mail attachments. When an infected program is started, so is its embedded virus.
A virus cannot be attached to data. It must be attached to a program that is downloaded into or installed on
the computer. When the virus-attached program is run, the virus is activated. Macro viruses, although
hidden within documents (data), are similar. It is in the execution of the macro that the damage is done.
A common type of virus is a boot virus, which is stored in the boot sectors of a floppy disk. If the floppy disk
is left in the drive when the computer is shut down and then turned on, the computer is infected when it
reads the boot sectors of the floppy disk expecting to find the operating system. If the computer is infected,
the boot virus may replicate itself onto all of the floppy disks that are read or written in that computer until
the virus is eradicated.
W
W - watt
The measurement of electrical power. One W is 1 ampere of current flowing at 1 volt.
wallpaper - The background pattern or picture on the Windows desktop. To change your wallpaper, access
the Display icon through the Control Panel. You can also scan in your favorite picture and make it
wallpaper.
write-protected - Files or media that cannot be changed. Use write-protection when you want to protect
data from being destroyed. To write-protect a 3.5-inch floppy disk, slide its write-protect tab to the open
position.
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