Commodore 128D - Page 411

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Printer: Peripheral device that outputs the contents of the comput
er's memory onto a sheet of papej. This paper is referred to as
a hard copy.
Program: A series of instructions that direct the computer to per
form a specific task. Programs can be stored on diskette or
cassette, reside in the computer's memory, or be listed on a
printer.
Programmable: Capable of being processed with computer
instructions.
Program Line: A statement or series of statements preceded by a
line number in a program. The maximum length of a program
line on the Commodore 128 is 160 characters.
PROM: Acronym for Programmable Read Only Memory. A semicon
ductor memory whose contents cannot be changed.
Protocol: The rules under which computers exchange information,
including the organization of the units of data to be transferred.
Random Access Memory (RAM): The programmable area of the
computer's memory that can be read from and written to
(changed). All RAM locations are equally accessible at any time
in any order. The contents of RAM are erased when the com
puter is turned off.
Random Number: A nine-digit decimal number from 0.000000001
to 0.999999999 generated by the RaNDom (RND) function.
Read Only Memory (ROM): The permanent portion of the comput
er's memory. The contents of ROM locations can be read, but
not changed. The ROM in the Commodore 128 contains the
BASIC language interpreter, character-image patterns and por
tions of the operating system.
Register: Any memory location in RAM. Each register stores one
byte. A register can store any value between 0 and 255 in
binary form.
Release: The rate at which the volume of a musical note decreases
from the sustain level to zero.
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GLOSSARY