Dell PowerEdge 4400 - Manual (Page 14)

bus
A bus forms an information pathway between the components of a computer. Your computer contains an expansion bus that allows the
microprocessor to communicate with controllers for all the various peripheral devices connected to the computer. Your computer also contains an
address bus and a data bus for communications between the microprocessor and RAM.
byte
Eight contiguous bits of information; the basic data unit used by your computer.
BZT
Abbreviation for Bundesamt fur Zulassungen in deer Telecommunication.
C
C
Abbreviation for Celsius.
cache
To facilitate quicker data retrieval, a storage area for keeping a copy of data or instructions. For example, your computer's BIOS may cache ROM
code in faster RAM. Or a disk-cache utility may reserve RAM in which to store frequently accessed information from your computer's disk drives;
when a program makes a request to a disk drive for data that is in the cache, the disk-cache utility can retrieve the data from RAM faster than from
the disk drive.
card-edge connector
On the bottom of an expansion card, the metal-contact section that plugs into an expansion-card connector.
CCFT
Abbreviation for cold cathode fluorescent tube.
CD-ROM
Abbreviation for compact disc read-only memory. CD-ROM drives use optical technology to read data from compact discs. CDs are read-only
storage devices; you cannot write new data to a CD with standard CD-ROM drives.
CGA
Abbreviation for color graphics adapter.
CIO
Abbreviation for comprehensive input/output.
cm
Abbreviation for centimeter(s).
CMOS
Acronym for complementary metal-oxide semiconductor. In computers, CMOS memory chips are often used for NVRAM storage.
COM
The MS-DOS device names for the first through fourth serial ports on your computer are COM1, COM2, COM3, and COM4. MS-DOS supports up
to four serial ports. However, the default interrupt for COM1 and COM3 is IRQ4, and the default interrupt for COM2 and COM4 is IRQ3. Therefore,
you must be careful when you configure software that runs a serial device so that you do not create an interrupt conflict.
CON
The MS-DOS device name for the console, which includes your computer's keyboard and text displayed on the screen.
config.sys file
When you boot your computer, MS-DOS runs any commands contained in the text file config.sys (before running any commands in the
autoexec.bat file). A config.sys file is not required to boot MS-DOS, but provides a convenient place to run commands that are essential for
setting up a consistent computing environment
—such as loading device drivers with a device= statement.
controller