Dell Latitude ATG D620 User Manual page 196

Glossary: Dell Latitude ATG D620 User's Guide
DDR2 SDRAM — double-data-rate 2 SDRAM — A type of DDR SDRAM that uses a 4-bit prefetch and
other architectural changes to boost memory speed to over 400 MHz.
device — Hardware such as a disk drive, printer, or keyboard that is installed in or connected to your
computer.
device driver — See driver.
DIMM — dual in-line memory module — A circuit board with memory chips that connects to a memory
module on the system board.
DIN connector — A round, six-pin connector that conforms to DIN (Deutsche Industrie-Norm)
standards; it is typically used to connect PS/2 keyboard or mouse cable connectors.
disk 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 processor.
docking device — See APR.
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-core — An Intel® technology in which two physical computational units exist inside a single
processor package, thereby increasing computing efficiency and multi-tasking ability.
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
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