HP Compaq Presario,Presario 7479 Reference Manual page 98

Glossary-4
x DVD-ROM (read only memory) – Contains read-only information.
x DVD-R (rewritable) – Information can be recorded to the disc only once using
a rewritable DVD drive.
x DVD-RAM (random access memory) – Information can be saved to the disc
using a rewritable DVD drive.
x DVD+RW (rewritable) –– Information can be saved to the disc using a
recordable DVD drive.
digital video disc – A CD-sized disc capable of storing a maximum of 135 minutes
of video, as well as the associated audio and subtitles in 8 different languages.
Contrast compact disc, digital versatile disc.
directory – An area on a disk where the names and locations of files are stored.
disc – See compact disc.
diskette –A storage device made of flexible plastic film coated with iron oxide
cased in a hard plastic shell. Also known as a 3.5" or floppy diskette. See floppy.
diskette drive – A device that enables a computer to read data from and write data
to diskettes.
Disk Operating System (DOS) – The generic name for the Microsoft Disk
Operating System (MS-DOS).
DOS – See Disk Operating System.
double-click – To press the left mouse button twice in rapid succession.
download – To transfer a copy of a file from a remote computer. Contrast upload.
drive – A device that enables the reading and sometimes writing of data to a
storage device. See CD drive, diskette drive, DVD drive, hard drive, Zip drive.
driver – A program that enables the Microsoft Windows operating system and the
BIOS to recognize and operate devices installed in or attached to a computer, such
as a PCI card or a printer. See Plug and Play.
duplex – Describes a communication channel that is always open in both
directions. In telecommunications, it refers to the ability of both parties to transmit
and receive signals at the same time. Also known as full duplex. Contrast half
duplex.
DVD – See digital versatile disc.