Dell PowerEdge 4400 - Manual (Page 30)

Abbreviation for volt(s) direct current.
VDE
Abbreviation for Verband Deutscher Elektrotechniker.
VESA
Acronym for Video Electronics Standards Association.
VGA
Abbreviation for video graphics array. VGA and SVGA are video standards for video adapters with greater resolution and color display
capabilities than EGA and CGA, the previous standards.
To display a program at a specific resolution, you must install the appropriate video drivers and your monitor must support the resolution. Similarly,
the number of colors that a program can display depends on the capabilities of the monitor, the video driver, and the amount of memory installed
for the video adapter.
VGA feature connector
On some systems with an integrated VGA video adapter, a VGA feature connector allows you to add an enhancement adapter, such as a video
accelerator, to your computer. A VGA feature connector can also be called a VGA pass-through connector.
video adapter
The logical circuitry that provides —in combination with the monitor or display—your computer's video capabilities. A video adapter may support
more or fewer features than a specific monitor offers. Typically, a video adapter comes with video drivers for displaying popular application
programs and operating environments in a variety of video modes.
On most current Dell computers, a video adapter is integrated into the system board. Also available are many video adapter cards that plug into an
expansion-card connector.
Video adapters can include memory separate from RAM on the system board. The amount of video memory, along with the adapter's video
drivers, may affect the number of colors that can be simultaneously displayed. Video adapters can also include their own coprocessor chip for
faster graphics rendering.
video driver
Graphics-mode application programs and operating environments, such as Windows, often require video drivers to display at a chosen resolution
with the desired number of colors. A program may include some "generic" video drivers. Any additional video drivers may need to match the video
adapter; you can find these drivers on a separate diskette with your computer or video adapter.
video memory
Most VGA and SVGA video adapters include VRAM or DRAM memory chips in addition to your computer's RAM. The amount of video memory
installed primarily influences the number of colors that a program can display (with the appropriate video drivers and monitor capability).
video mode
Video adapters normally support multiple text and graphics display modes. Character-based software (such as MS-DOS) displays in text modes
that can be defined as x columns by y rows of characters. Graphics-based software (such as Windows) displays in graphics modes that can be
defined as x horizontal by y vertical pixels by z colors.
video resolution
Video resolution —640 x 480, for example—is expressed as the number of pixels across by the number of pixels up and down. To display a
program at a specific graphics resolution, you must install the appropriate video drivers and your monitor must support the resolution.
virtual 8086 mode
An operating mode supported by Intel386 or higher microprocessors, virtual 8086 mode allows operating environments —such as Windows—to
run multiple programs in separate 1-MB sections of memory. Each 1-MB section is called a virtual machine.
virtual memory
A method for increasing addressable RAM by using the hard-disk drive. (MS-DOS does not support true virtual memory, which must be
implemented at the operating-system level.) For example, in a computer with 8 MB of RAM and 16 MB of virtual memory set up on the hard-disk
drive, the operating system would manage the system as though it had 24 MB of physical RAM.
virus
A self-starting program designed to inconvenience you. Virus programs have been known to corrupt the files stored on a hard-disk drive or to
replicate themselves until a system or network runs out of memory.