Users Guide

168 Glossary

CRC

Abbreviation for cyclic redundancy code, which is a number derived from, and

stored or transmitted with, a block of data in order to detect corruption. By

recalculating the CRC and comparing it to the value originally transmitted, the

receiver can detect some types of transmission errors.

CSR

Abbreviation for certificate signing request.

cursor

A marker, such as a block, underscore, or pointer that represents the position at

which the next keyboard or mouse action will occur.

DAT

Acronym for digital audio tape.

Abbreviation for decibel(s).

dBA

Abbreviation for adjusted decibel(s).

DBS

Abbreviation for Demand Based Switching. DBS is power management

performed by switching to a low power state (frequency and voltage) when the

processor utilization is low. It maintains application performance while lowering

the average system power.

Abbreviation for direct current.

Also, abbreviation for Dual Channel.

device driver

A program that allows the operating system or some other program to interface

correctly with a peripheral device, such as a printer. Some device drivers—such

as network drivers—must be loaded from the config.sys file (with a device=

statement) or as memory-resident programs (usually, from the autoexec.bat file).

Others—such as video drivers—must load when you start the program for which

they were designed.