Dell PowerEdge 4300 Dell PowerEdge 4300 Systems User's Guide - Page 139

Abbreviation for Celsius.

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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. Eight contiguous bits of information; the basic data unit used by your computer. Abbreviation for centimeter(s). Acronym for complementary metal-oxide semiconductor. In computers, CMOS memory chips are often used for NVRAM storage. Abbreviation for Bundesamt fur Zulassungen in der Telekommunikation. Abbreviation for Celsius. 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. On the bottom of an expansion card, the metal-contact section that plugs into an expansion-card connector. Abbreviation for cold cathode fluorescent tube. 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 configuring software that runs a serial device so that you don't create an interrupt conflict. The MS-DOS device name for the console, which includes your computer's keyboard and text displayed on the screen. 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. Abbreviation for compact disc read-only memory. CD-ROM drives use optical technology to read data from compact discs. Compact discs are read-only storage devices; you cannot write new data to a compact disc with standard CD-ROM drives. Abbreviation for color graphics adapter. Abbreviation for comprehensive input/ output. A chip or expansion card that controls the transfer of data between the microprocessor and a peripheral such as a disk drive or the keyboard. The first 640 KB of RAM. Unless they are specially designed, MS-DOS programs are limited to running in conventional memory. See also EMM, expanded memory, extended memory, HMA, memory manager, upper memory area, and XMM. Glossary 3

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Glossary
3
various peripheral devices connected to
the computer. Your computer also con-
tains an address bus and a data bus for
communications between the micro-
processor and RAM.
E\WH
Eight contiguous bits of information; the
basic data unit used by your computer.
%=7
Abbreviation for
Bundesamt fur Zulassun-
gen in der Telekommunikation
.
&
Abbreviation for Celsius.
FDFKH
To facilitate quicker data retrieval, a stor-
age area for keeping a copy of data or
instructions. For example, your comput-
er’s BIOS may cache ROM code in faster
RAM. Or, a disk-cache utility may reserve
RAM in which to store frequently access-
ed 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.
FDUG¶HGJH±FRQQHFWRU
On the bottom of an expansion card, the
metal-contact section that plugs into an
expansion-card connector.
&&)7
Abbreviation for cold cathode fluorescent
tube.
&’¶520
Abbreviation for compact disc read-only
memory. CD-ROM drives use optical
technology to read data from compact
discs. Compact discs are read-only stor-
age devices; you cannot write new data
to a compact disc with standard CD-ROM
drives.
&*$
Abbreviation for color graphics adapter.
&,2
Abbreviation for comprehensive input/
output.
FP
Abbreviation for centimeter(s).
&026
Acronym for complementary metal-oxide
semiconductor. In computers, CMOS
memory chips are often used for NVRAM
storage.
&20
Q
The MS-DOS device names for the first
through fourth serial ports on your com-
puter 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 con-
figuring software that runs a serial device
so that you don’t create an interrupt
conflict.
&21
The MS-DOS device name for the con-
sole, which includes your computer’s
keyboard and text displayed on the
screen.
FRQILJµV\V
±ILOH
When you boot your computer, MS-DOS
runs any commands contained in the text
file
config.sys
(before running any com-
mands 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 environ-
ment—such as loading device drivers with
a
device=
statement.
FRQWUROOHU
A chip or expansion card that controls the
transfer of data between the micro-
processor and a peripheral such as a disk
drive or the keyboard.
FRQYHQWLRQDO±PHPRU\
The first 640 KB of RAM. Unless they are
specially designed, MS-DOS programs
are limited to running in conventional
memory. See also
EMM
,
expanded mem-
ory
,
extended memory
,
HMA
,
memory
manager
,
upper memory area
, and
XMM
.