NEC POWERMATE 2000 Service And Reference Manual page 174

virus
Software that copies itself onto hard drives and diskettes without user intervention,
usually when a diskette is placed into the drive of a computer. Viruses usually
trigger a harmless or destructive occurrence on the system, activated by some preset
condition. Viruses are frequently written with antisocial intent.
VGA
Video Graphics Array. Graphics technology that supports up to 256 K colors and a
graphics resolution of 640 by 480 pixels.
volatile memory
Storage media that loses its data when system power is turned off. Standard
memory and memory added to the system are volatile memory. See nonvolatile
memory.
VRAM
Video RAM. VRAM is special-purpose memory used by video adapters. Unlike
conventional RAM, VRAM can be accessed by two different devices
simultaneously. This enables a video adapter to access the VRAM for screen
updates at the same time that the CPU provides new data. VRAM yields better
graphics performance but is more expensive than normal RAM. A special type of
VRAM, called Windows RAM (WRAM), yields even better performance than
conventional VRAM. See SGRAM and WRAM.
W
warm boot
Process of resetting the computer without turning off the power through keyboard
input (pressing , , and keys simultaneously) or the reset button. The
Ctrl Alt Del
system returns to an initial or arbitrarily selected condition.
WRAM
Windows RAM. A type of RAM that supports two ports. This enables a video
adapter to fetch the contents of memory for display at the same time that new bytes
are being pumped into memory. This results in much faster display than is possible
with conventional single-port RAM. WRAM is similar to VRAM, but achieves
even faster performance at less cost because it supports addressing of large blocks
(windows) of video memory. See VRAM and SGRAM.
write
To record or store information to a storage device.
16 Glossary