Commodore 128 System Manual page 436

(changed). All RAM locations are equally accessible at any
time in any order. The contents of RAM are erased when the
computer 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
computer'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 portions 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.
Remark: Comments used to document a program. Remarks are
not executed by the computer, but are displayed in the
program listing.
Resolution: The density of pixels on the screen that determine the
fineness of detail of a displayed image.
RGBI Monitor: Red/G reen/Blue/lntensity. A high-resolution
display device necessary to produce an 80-column screen
format.
Ribbon Cable: A group of attached parallel wires.
Ring Network: A system in which all stations are linked to form a
continuous loop or circle.
RS-232: A recommended standard for electronic and mechanical
specifications of serial transmission ports. The Commodore
128 parallel user port can be treated as a serial port if
accessed through software, sometimes with the addition of an
interface device.
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