Glossary
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RMS Root Mean Squared
RTC Real Time Clock—An electronic circuit that maintains the time
of day and also can provide timing signals for timesharing
operations.
S
SATA Serial-ATA. See also ATA.
SCSI Small Computer System Inteface
SDRAM
A form of dynamic RAM memory that is about 20% faster than
EDO RAM. SDRAM interleaves two or more internal memory
arrays so that while one array is being accessed, the next one is
being prepared for access. SDRAM-II is a faster version of
SDRAM technology.
SO-DIMM Small Outline Dual In-line Memory Module
SPD Serial Presence Detect EEPROM
SRAM Static RAM—A memory chip that requires power to hold its
content. It does not require refresh circuitry as a dynamic RAM
chip, but it does take up more space and uses more power.
U
UDMA Ultra Direct Memory Access. See also DMA.
USB Universal Serial Bus
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