Glossary 301
CRIMM — continuity rambus in-line memory module — A special module that
has no memory chips and is used to fill unused RIMM slots.
C
URSOR — The marker on a display or screen that shows where the next keyboard
or mouse action will occur. It often is a blinking solid line, an underline character, or
a small arrow.
D
DDR SDRAM — double-data-rate SDRAM — A type of SDRAM that doubles
the data burst cycle, improving system performance.
D
EVICE — Hardware such as a disk drive, printer, or keyboard that is installed in or
connected to your computer.
D
EVICE DRIVER — See driver.
DIN
CONNECTOR — A round, six-pin connector that conforms to DIN
(Deutsche Industrinorm) standards; it is typically used to connect PS/2 keyboard or
mouse cable connectors.
D
ISK STRIPING — A technique for spreading data over multiple disk drives. Disk
striping can speed up operations that retrieve data from disk storage. Computers
that use disk striping generally allow the user to select the data unit size or stripe
width.
DMA — direct memory access — A channel that allows certain types of data
transfer between RAM and a device to bypass the microprocessor.
DMTF — Distributed Management Task Force — A consortium of hardware and
software companies who develop management standards for distributed desktop,
network, enterprise and Internet environments.
DRAM — dynamic random-access memory — Memory that stores information in
integrated circuits containing capacitors.
D
RIVER — 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.
D
UAL 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 — 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.
DVD
DRIVE — A drive that uses optical technology to read data from DVDs and
CDs.
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