Digital Equipment DEC 3000 Series Service Information page 407

DECwindows Motif
An interface to the operating system that allows a workstation
screen to be divided into windows where several application
programs can appear simultaneously, and commands can be
executed using menus and a mouse. This interface is fully
compliant with the OSF/Motif Graphical User Interface standard
from the Open Software Foundation. See also window.
default
A computer value or setting that is automatically in effect unless
or until another value is specified. There are some default values
that you cannot override.
default recovery action
The action that the system takes after a power or system failure.
desktop enclosure
A type of system cabinet that is small enough to sit on top of a
desk. Compare with rackmount enclosure.
device
The general name for any hardware unit connected to the system
and capable of receiving, storing, or transmitting data. Examples
of devices are drives and units that you can install into or
externally connect to the system unit or an expansion box.
device name
The name by which a device or controller is identified in the
system. The name that a particular operating system uses for a
storage device to access that particular device. Also called the
device mnemonic.
diagnostics
Programs, located in read-only memory, that detect and identify
abnormal system hardware operation.
digital data
Information recorded and transmitted in binary coded form.
direct memory access
A processor that transfers data directly from one memory to
another without going through the main processor.
disc
See compact disc.
disk
A flat circular plate with a magnetic coating on which data is
magnetically stored in concentric circles (tracks). A fixed disk
resides permanently inside a disk drive, whereas a diskette is
removable.
Glossary–7