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Glossary
G-6
ni.com
R
RAM
Random Access Memory—the computer’s primary workspace.
RAMDAC
Random Access Memory Digital to Analog Converter—the VGA 
controller chip that maintains the color palette and converts data from 
memory into analog signals for the monitor.
resource
Hardware settings used by devices in a computer system, including 
ISA interrupt level, DMA channel, and I/O address.
RMS
Root mean squared. See also 
RTC
Real Time Clock—An electronic circuit that maintains the time of day and 
also can provide timing signals for timesharing operations.
S
s
Seconds.
slave
A functional part of a PXI device that detects data transfer cycles initiated 
by a PXI bus master and responds to the transfers when the address 
specifies one of the device’s registers.
SO-DIMM
Small Outline Dual In-line Memory Module.
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
USB
Universal Serial Bus.