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Glossary 183
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.
E
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.
book.book Page 183 Friday, November 30, 2007 11:28 AM