Compatibility Guide

Glossary 139

coprocessor

A chip that relieves the system's microprocessor of specific processing tasks. A

math coprocessor, for example, handles numeric processing. A graphics

coprocessor handles video rendering.

cpi

Abbreviation for characters per inch.

CPU

Abbreviation for central processing unit. See also microprocessor.

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.