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Glossary 239
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.
WPAN — wireless personal area network. A computer network used for communica-
tion among computer devices (including telephones and personal digital assistants)
close to one person.
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.
Z
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 socket.
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.
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 of data.
book.book Page 239 Wednesday, September 16, 2009 11:12 AM