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Glossary 65
DMA (direct memory access)
The process of transferring data directly between memory
and peripheral devices without microprocessor
intervention.
Double click
Press twice, in rapid succession, on a mouse button.
DPMS (data power-management signaling)
Describes monitors that can conserve power when the
system is inactive by blanking the screen.
Drag
To press and hold down the left mouse button when the
mouse pointer is positioned over an object, and then move
the mouse to a new position and release the mouse button.
The object moves along with the mouse pointer to the new
position.
Drive
A hierarchical organization of directories, stored on a disk.
A drive usually corresponds to the medium stored in a
specific physical storage device, such as a floppy disk in a
disk drive. See directory, directory tree, subdirectory.
Driver
See Device driver.
ECP (extended capabilities port)
A parallel port that supports bi-directional and DMA data
transfer.
EPP (enhanced parallel port)
A parallel port that supports high-speed, bidirectional data
transfer.
Extended memory
System memory above 1 MB that can be accessed directly by
some operating systems.
FDISK
A DOS utility program that enables you to create partitions,
which DOS can recognize as a drive, on a hard disk. FDISK
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