NEC POWERMATE V486 - SERVICE, Manual

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Glossary-9
system board
The main printed circuit board inside the system unit into
which other boards and major chip components, such as the
system microprocessor, are connected.
system unit
The system component that contains the computer parts,
drives, power supply, and option boards.
V
VGA
Video Graphics Array. Graphics technology that supports
many colors and resolutions (for example, 256 colors and a
graphics resolution of 800 by 600 pixels).
volatile memory
Storage media that loses its data when system power is
turned off. Standard memory and memory that you add to
your computer are volatile memory. See nonvolatile
memory.
W
wait state
The additional cycle beyond the minimum cycles required
by the microprocessor to complete a memory transaction.
When additional cycles are required, the microprocessor
must wait for the additional cycle before the transaction is
completed. A “zero wait state” means that the operation
required no additional cycles to complete the memory
transaction.
warm boot
Process of resetting the computer without turning off the
power through keyboard input (pressing
Ctrl
,
Alt
, and
Del
keys simultaneously) or the reset button. The system returns
to an initial or arbitrarily selected condition.