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176 Glossary
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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.
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.