SNMP Reference Guide

762 Glossary
refresh rate
The rate at which the monitor redraws the video image on the monitor screen.
More precisely, the refresh rate is the frequency, measured in Hz, at which the
screen’s horizontal lines are recharged (sometimes also referred to as its
vertical
frequency
). The higher the refresh rate, the less video flicker can be seen by the
human eye. The higher refresh rates are also noninterlaced.
RFI
Abbreviation for radio frequency interference.
RGB
Abbreviation for red/green/blue.
RIMM
Acronym for Rambus In-line Memory Module, which is the Rambus equivalent
of a DIMM module.
ROM
Acronym for read-only memory. Your computer contains some programs essential
to its operation in ROM code. Unlike RAM, a ROM chip retains its contents even
after you turn off your computer. Examples of code in ROM include the program
that initiates your computer’s boot routine and the POST.
rpm
Abbreviation for revolutions per minute.
RTC
Abbreviation for real-time clock. Battery-powered clock circuitry inside the
computer that keeps the date and time after you turn off the computer.
SAS
Acronym for Serial Attached SCSI.
SCA
Acronym for single connector attachment.
schema
A collection of class definitions that describes managed objects in a particular
environment. A CIM schema is a collection of class definitions used to represent
managed objects that are common to every management environment, which is
why CIM is called the Common Information Model.
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