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
ZIF — zero insertion force — A type of socket or
connector that allows a computer chip to be installed or
removed with no stress applied to either the chip or its
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
Zip — A popular data compression format. Files that have
been compressed with the Zip format are called Zip files
and usually have a filename extension of .zip. A special
kind of zipped file is a self-extracting file, which has a
filename extension of .exe. You can unzip a self-extracting
file by double-clicking it.
W — watt — The measurement of electrical power. One
Zip drive — A high-capacity floppy drive developed by
Iomega Corporation that uses 3.5-inch removable disks
called Zip disks. Zip disks are slightly larger than regular
floppy disks, about twice as thick, and hold up to 100 MB
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
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
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.
XGA — extended graphics array — A video standard for
video cards and controllers that supports resolutions up to
1024 x 768.