353
video memory
— Memory that consists of memory chips dedicated to video functions.
Video memory is usually faster than system memory. The amount of video memory
installed primarily influences the number of colors that a program can display.
video mode
— A mode that describes how text and graphics are displayed on a
monitor. Graphics-based software, such as Windows operating systems, displays in
video modes that can be defined as
x
horizontal pixels by
y
vertical pixels by
z
colors.
Character-based software, such as text editors, displays in video modes that can be
defined as
x
columns by
y
rows of characters.
video resolution
— See
resolution
.
virus
— A program that is designed to inconvenience you or to destroy data stored on
your computer. A virus program moves from one computer to another through an
infected disk, software downloaded from the Internet, or e-mail attachments. When
an infected program starts, its embedded virus also starts.
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.
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.
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Страница 32: ...32 Finding Information ...
Страница 98: ...98 Drives and Media ...
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Страница 148: ...148 Power Power Settings Power Protection Devices and Batteries ...
Страница 170: ...170 Networks LAN Wireless Mobile Broadband ...
Страница 190: ...190 Accessing the Internet ...
Страница 202: ...202 E mail ...
Страница 214: ...214 Multimedia ...
Страница 260: ...260 Security and Privacy ...
Страница 264: ...264 Microsoft Windows XP Pro Remote Desktop ...
Страница 306: ...306 Troubleshooting ...
Страница 330: ...330 Ports ...
Страница 338: ...338 Getting Help ...