User's Manual

Glossary 209
control panel
The part of the computer that contains indicators and controls, such as the power
switch, hard drive access indicator, and power indicator.
conventional memory
The first 640 KB of RAM. Conventional memory is found in all computers. Unless
they are specially designed, MS-DOS
®
programs are limited to running in
conventional memory.
COO
Acronym for cost of ownership.
cooling unit
Sets of fans or other cooling devices in a system chassis.
coprocessor
A chip that relieves the computer's microprocessor of specific processing tasks. A
math coprocessor, for example, handles numeric processing. A graphics
coprocessor handles video rendering. The Intel Pentium microprocessor for
example, includes a built-in math coprocessor.
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. A complex text file generated by a
Web server to identify and authenticate systems that seek connections to other
systems. The digital signature that is present in every CSR contributes to secure
identification of systems.
When a remote access controller is present on a system running Server
Administrator, the CSR that comes with the RAC belongs to Dell. If your