Dell 3100C owner manual Glossary

m	VIRUS — A program that is designed to inconvenience
c o	you or to destroy data stored on your computer. A virus
l l .	program moves from one computer to another through an
. d e
	infected disk, software downloaded from the Internet, or
r t	e-mail attachments. When an infected program starts, its
p o
	embedded virus also starts.
s u p
	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
	o m
the drive when the computer is shut down and then
l . c	turned on, the computer is infected when it reads the
e l	boot sectors of the floppy disk expecting to find the
w. d
	operating system. If the computer is infected, the boot
w	virus may replicate itself onto all the floppy disks that are
w	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.

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.

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.

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Glossary