Commodore 128 System Manual page 437

Screen: Video display unit which can be either a television or
video monitor.
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.
Serial Port: A port used for serial transmission of data; bits are
transmitted one bit after the other over a single wire.
Serial Transmission: The sending of sequentially ordered data
bits.
Software: Computer programs (sets of instructions) stored on disk,
tape or cartridge that can be loaded into random access
memory. Software, in essence, tells the computer what to do.
Sound Interface Device (SID): The MOS 6581 sound synthesizer
chip responsible for all the audio features of the Commodore
128.
Source Code: A non-executable program written in a high-level
language. A compiler or assembler must translate the source
code into an object code (machine language) that the
computer can understand.
Sprite: A programmable, movable, high-resolution graphic image.
Also called a Movable Object Block (MOB).
Standard Character Mode: The mode the Commodore 128
operates in when you turn it on and when you write programs.
Start Bit: A bit or group of bits that identifies the beginning of a
data word.
Statement: A BASIC instruction contained in a program line.
GL-13