Glossary
289
controllers that supports resolutions up to 1600 x 1200.
V
video controller
— The circuitry on a video card or on the system board (in computers
with an integrated video controller) that provides the video capabilities—in
combination with the monitor—for your computer.
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.
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 the drive when the computer is shut down and then
turned on, the computer is infected when it reads the boot sectors of the floppy disk
expecting to find the 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 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.
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
book.book Page 289 Tuesday, August 28, 2007 10:20 AM
Содержание Precision M6300
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Страница 22: ...22 Finding Information ...
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Страница 31: ...Finding Information 31 ...
Страница 32: ...32 Finding Information ...
Страница 51: ...Setting Up Your Computer 51 ...
Страница 52: ...52 Setting Up Your Computer ...
Страница 62: ...62 Using a Battery ...
Страница 63: ...Using a Battery 63 ...
Страница 64: ...64 Using a Battery ...
Страница 65: ...Using a Battery 65 ...
Страница 66: ...66 Using a Battery ...
Страница 67: ...Using a Battery 67 ...
Страница 68: ...68 Using a Battery ...
Страница 69: ...Using a Battery 69 ...
Страница 70: ...70 Using a Battery ...
Страница 71: ...Using a Battery 71 ...
Страница 72: ...72 Using a Battery ...
Страница 73: ...Using a Battery 73 ...
Страница 74: ...74 Using a Battery ...
Страница 84: ...84 Using the Display ...
Страница 104: ...104 Using Multimedia Component Video and S PDIF Digital Audio 1 S video TV out connector 2 component video adapter 1 2 ...
Страница 109: ...Using Multimedia 109 ...
Страница 110: ...110 Using Multimedia ...
Страница 122: ...122 Setting Up and Using Networks ...
Страница 128: ...128 Using Cards 1 smart card slot 2 smart card 3 ExpressCard slot 1 2 3 ...
Страница 152: ...152 Troubleshooting RUN THE HARDWARE TROUBLESHOOTER See Troubleshooting Software and Hardware Problems on page 169 ...
Страница 160: ...160 Troubleshooting ...
Страница 193: ...Adding and Replacing Parts 193 1 securing clips 2 2 mini card 2 1 ...
Страница 204: ...204 Adding and Replacing Parts 2 Align the display assembly over the screw holes in the base of the computer ...
Страница 238: ...238 Adding and Replacing Parts 1 ExpressCard connector 2 ExpressCard connector on system board 1 2 ...
Страница 250: ...250 Adding and Replacing Parts ...
Страница 252: ...252 Dell QuickSet ...
Страница 256: ...256 Traveling With Your Computer ...
Страница 264: ...264 Getting Help ...
Страница 291: ...Glossary 291 ...
Страница 292: ...292 Glossary ...