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Users Manual Glossary-6
Glossary
disk drive: The device that randomly accesses information on a disk and
copies it to the computer°¶s memory. It also writes data from
memory to the disk. To accomplish these tasks, the unit physically
rotates the disk at high speed past a read-write head.
disk storage: Storing data on magnetic disk. Data is arranged on
concentric tracks much like a phonograph record.
display: A CRT, LCD, or other image producing device used to view
computer output.
documentation: The set of manuals and/or other instructions written for
the users of a computer system or application. Computer system
documentation typically includes procedural and tutorial information
as well as system functions.
double click: To press and release the pointing device's primary button
rapidly twice without moving the pointing device. In the Windows
®
operating system, this refers to the pointing device's left button,
unless otherwise stated.
driver: A software program, generally part of the operating system, that
controls a specific piece of hardware (frequently a peripheral device
such as a printer or mouse).
DVD: An individual digital versatile (or video) disc. See also DVD-ROM.
DVB-T (Digital Video Broadcasting - Terrestrial): Also known as
terrestrial digital TV. Digital TV broadcasting standard.
DVD-R (+R, -R): A Digital Versatile Disc Recordable disc can be written
once and read many times. The DVD-R drive uses a laser to read
data from the disc.
DVD-RAM: A Digital Versatile Disc-Random Access Memory is a high
capacity, high performance disc that lets you store large volumes of
data. The DVD-RAM drive uses a laser to read data from the disc.
DVD-R (Dual Layer): A disc having two layers on one side with the DVD-R
storage capacity about 1.8 times larger than before. The DVD-RW
drive uses a laser to read data from the disc.
DVD-ROM: A Digital Versatile Disc-Read Only Memory is a high capacity,
high performance disc suitable for play back of video and other
high-density files. The DVD-ROM drive uses a laser to read data
from the disc.
DVD-RW (+RW, -RW): A Digital Versatile Disc-ReWritable disc can be
rewritten many times.
DVD+R (Double Layer): A disc having two layers on one side with the
DVD+R storage capacity about 1.8 times larger than before. The
DVD-RW drive uses a laser to read data from the disc.
echo: To send back a reflection of the transmitted data to the sending
device. You can display the information on the screen, or output it to
the printer, or both. When a computer receives back data it
transmitted to a CRT (or other peripheral device) and then transmits
the data to printer, the printer is said to echo the CRT.