Glossary: Dell Latitude D620 User's Guide
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 the floppy disks that are read or
written in that computer until the virus is eradicated.
V
volt The measurement of electric potential or electromotive force. One V appears across a
resistance of 1 ohm when a current of 1 ampere flows through that resistance.
W
W
watt The measurement of electrical power. One W is 1 ampere of current flowing at 1 volt.
WHr
watt-hour A unit of measure commonly used to indicate the approximate capacity of a battery.
For example, a 66-WHr battery can supply 66 W of power for 1 hour or 33 W for 2 hours.
wallpaper
The background pattern or picture on the Windows desktop. Change your wallpaper
through the Windows Control Panel. You can also scan in your favorite picture and make it wallpaper.
WLAN
wireless local area network. A series of interconnected computers that communicate with each
other over the air waves using access points or wireless routers to provide Internet access.
write-protected
Files or media that cannot be changed. Use write-protection when you want to
protect data from being changed or destroyed. To write-protect a 3.5-inch floppy disk, slide its write-
protect tab to the open position.
WWAN
wireless wide area network. A wireless high-speed data network using cellular technology and
covering a much larger geographic area than WLAN.
WXGA
wide-aspect extended graphics array A video standard for video cards and controllers that
supports resolutions up to 1280 x 800."
X
XGA
extended graphics array A video standard for video cards and controllers that supports
resolutions up to 1024 x 768.
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