NEC POWERMATE PROFESSIONAL 9000 Service Manual page 284

Glossary-8
SGRAM
Synchronous Graphics Random Access Memory.
shadowing
To copy the system and video BIOS from chip to RAM for enhanced system performance.
software
Programs that run on a computer, such as operating systems, word processors, and
spreadsheets.
SRS
®
SRS, also called surround sound, is a Sound Retrieval System which goes beyond stereo
sound. It creates a three-dimensional sound image with only two conventional speakers.
Using pre-recorded music, it retrieves the spatial information and restores the original three-
dimensional sound field. The reproduced sound is much closer to a live performance.
Multimedia models support the SRS feature.
synchronous communication
Method of data transmission where transmission is regulated by a clock.
system board
The main printed circuit board inside the system unit to 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.
Ultra DMA
A standard for hard disk drives allowing data transfer at twice the rate of non-Ultra DMA
drives. Developed by Quantum and Intel.
USB
Universal Serial Bus. Serial port from which up to 127 external devices can be daisy
chained. Power and signal are carried through the connector, and Plug and Play devices can
be added without having to be configured for the system.