Dell GX620 - 3.6GHz Desktop 1GB RAM 80GB Windows XP SFF, Руководство пользователя

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Glossary 305
that retrieve data from disk storage. Computers that use disk
striping generally allow the user to select the data unit size
or stripe width
.
D M A — direct memory access — A channel that allows
certain types of data transfer between RAM and a device to
bypass the processor.
D O C K I N G D E V I C E
— See APR .
D M T F — Distributed Management Task Force — A
consortium of hardware and software companies who
develop management standards for distributed desktop,
network, enterprise, and Internet environments.
D O M A I N
— A group of computers, programs, and devices
on a network that are administered as a unit with common
rules and procedures for use by a specific group of users. A
user logs on to the domain to gain access to the resources.
D R A M — dynamic random-access memory — Memory
that stores information in integrated circuits containing
capacitors.
D R I V E R
— Software that allows the operating system to
control a device such as a printer. Many devices do not work
properly if the correct driver is not installed in the computer.
D S L — Digital Subscriber Line — A technology that
provides a constant, high-speed Internet connection through
an analog telephone line.
D U A L D I S P L A Y M O D E
— A display setting that allows
you to use a second monitor as an extension of your display.
Also referred to as
extended display mode .
D V D — digital versatile disc — A disc usually used to
store movies. DVDs are double-sided, whereas CDs are
single-sided. DVD drives read most CD media as well.
D V D
D R I V E
— A drive that uses optical technology to
read data from DVDs and CDs.
D V D
P L A Y E R
— The software used to watch DVD
movies. The DVD player displays a window with buttons
that you use to watch a movie.
D V D + RW — DVD rewritable — A rewritable version of
a DVD. Data can be written to a DVD+RW disc, and then
erased and written over (rewritten). (DVD+RW technology
is different from DVD-RW technology.)
D V D + RW
D R I V E
— A drive that can read DVDs and
most CD media and write to DVD+RW (rewritable DVDs)
discs.
D V I — digital video interface — A standard for digital
transmission between a computer and a digital video
display; the DVI adapter works through the computer’s
integrated graphics.
E
E C C — error checking and correction — A type of
memory that includes special circuitry for testing the
accuracy of data as it passes in and out of memory.
E C P — extended capabilities port — A parallel connector
design that provides improved bidirectional data
transmission. Similar to EPP, ECP uses direct memory
access to transfer data and often improves performance.
E I D E — enhanced integrated device electronics — An
improved version of the IDE interface for hard drives and
CD drives.
E M I — electromagnetic interference — Electrical
interference caused by electromagnetic radiation.
E N E R G Y S TA R
®
— Environmental Protection Agency
requirements that decrease the overall consumption of
electricity.
E P P — enhanced parallel port — A parallel connector
design that provides bidirectional data transmission.
E S D — electrostatic discharge — A rapid discharge of
static electricity. ESD can damage integrated circuits found
in computer and communications equipment.
E X P A N S I O N C A R D
— A circuit board that installs in an
expansion slot on the system board in some computers,
expanding the capabilities of the computer. Examples
include video, modem, and sound cards.
E X P A N S I O N S L O T
— A connector on the system board
(in some computers) where you insert an expansion card,
connecting it to the system bus.
E
X P R E S S
S
E R V I C E
C
O D E
— A numeric code located
on a sticker on your Dell™ computer. Use the Express
Service Code when contacting Dell for assistance. Express
Service Code service may not be available in some
countries.