Dell Dimension C521 Uživatelský manuál stáhnout pdf (Strana 129)

Glossary 129

DMTF — Distributed Management Task Force — A

consortium of hardware and software companies who

develop management standards for distributed desktop,

network, enterprise, and Internet environments.

domain — 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.

DRAM — dynamic random-access memory — Memory

that stores information in integrated circuits containing

capacitors.

driver — 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.

DSL — Digital Subscriber Line — A technology that

provides a constant, high-speed Internet connection

through an analog telephone line.

dual display mode — A display setting that allows you to

use a second monitor as an extension of your display. Also

referred to as extended display mode.

DVD-R — DVD recordable — A recordable version of a

DVD. Data can be recorded only once onto a DVD-R.

Once recorded, the data cannot be erased or written over.

DVD+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.)

DVD+RW drive — drive that can read DVDs and most

CD media and write to DVD+RW (rewritable DVDs)

discs.

DVI — digital video interface — A standard for digital

transmission between a computer and a digital video

display.

ECC — 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.

ECP — 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.

EIDE — enhanced integrated device electronics — An

improved version of the IDE interface for hard drives and

CD drives.

EMI — electromagnetic interference — Electrical

interference caused by electromagnetic radiation.

ENERGY STAR

— Environmental Protection Agency

requirements that decrease the overall consumption of

electricity.

EPP — enhanced parallel port — A parallel connector

design that provides bidirectional data transmission.

ESD — electrostatic discharge — A rapid discharge of

static electricity. ESD can damage integrated circuits

found in computer and communications equipment.

expansion card — 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.

expansion slot — A connector on the system board (in

some computers) where you insert an expansion card,

connecting it to the system bus.

ExpressCard — A removable I/O card adhering to the

PCMCIA standard. Modems and network adapters are

common types of ExpressCards. ExpressCards support

both the PCI Express and USB 2.0 standard.

Express Service Code — 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.

extended display mode — A display setting that allows

you to use a second monitor as an extension of your

display. Also referred to as dual display mode.

extended PC Card — A PC Card that extends beyond the

edge of the PC Card slot when installed.

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