Commodore 128D - Page 412

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Remark: Comments used to document a program. Remarks are not
o executed by the computer, but are displayed in the program
listing. U
Resolution: The density of pixels on the screen that determine the
fineness of detail of a displayed image. j \
RGBI Monitor. Red/Green/Blue/Intensity. A high-resolution display .
device necessary to produce an 80-column screen format. \ j
Ribbon Cable: A group of attached parallel wires. .
f I
Ring Network: A system in which all stations are linked to form a
continuous loop or circle.
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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 ac- [^
cessed through software, sometimes with the addition of an
interface device.
) /
Screen: Video display unit which can be either a television or video
monitor.
u
Screen Code: The number assigned to represent a character in
screen memory. When you type a key on the keyboard, the
screen code for that character is entered into screen memory ^ |
automatically. You can also display a character by storing its
screen code directly into screen memory with the POKE
command. \ (
Screen Memory: The area of the Commodore 128's memory that
contains the information displayed on the video screen. { j
Serial Port: A port used for serial transmission of data; bits are
transmitted one bit after the other over a single wire. \_J
Serial Transmission: The sending of sequentially ordered data bits. :
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Software: Computer programs (sets of instructions) stored on disk,
tape or cartridge that can be loaded into random access mem- .
ory. Software, in essence, tells the computer what to do. \\
408 GLOSSARY