Delay Loop: An empty FOR . . . NEXT loop that slows the
execution of a program.
Dial-Up Line: The normal switched telephone line that can be
used as a transmission medium for data communications.
Digital: Of or relating to the technology of computers and data
communications where all information is encoded as bits of
1 s or Os that represent on or off states.
Dimension: The property of an array that specifies the direction
along an axis in which the array elements are stored. For
example, a two-dimensional array has an X-axis for columns
and a Y-axis for rows. See Array.
Direct Mode: The mode of operation that executes BASIC
commands immediately after the RETURN key is pressed.
Also called Immediate Mode. See Command.
Direct Connect Modem: A digital non-acoustic modem.
Disable: To turn off a bit, byte or specific operation of the
computer.
Disk Drive: A random access, mass-storage device that saves
and loads files to and from a floppy diskette.
Disk Operating System: Program used to transfer information to
and from a disk. Often referred to as a DOS.
Duration: The length of time a musical note is played.
Electronic Mail or E-Mail: A communications service for computer
users where textual messages are sent to a central computer,
or electronic “mail box,” and later retrieved by the addressee.
Enable: To turn on a bit, byte or specific operation of the
computer.
Envelope Generator: Portion of the Commodore 128 that
produces specific envelopes (attack, decay, sustain, release)
for musical notes. See Waveform.
GL-6
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