Commodore 128 System Manual page 434

Multi-Color Character Mode: A graphic mode that allows you to
display four different colors within an 8 X 8 character grid.
Multi-Color Bit Map Mode: A graphic mode that allows you to
display one of four colors for each pixel within an 8 X 8
character grid. See Pixel.
Multiple-Access Network: A flexible system by which every
station can have access to the network at all times; provisions
are made for times when two computers decide to transmit at
the same time.
Null String: An empty character (" " ). A character that is not yet
assigned a character string code.
Octave: One full series of eight notes on the musical scale.
Operating System: A built-in program that controls everything your
computer does.
Operator: A symbol that tells the computer to perform a
mathematical, logical or relational operation on the specified
variables, constants or array elements in the expression.
The mathematical operators are + ,-,*,/ and t. The
relational operators are < , = , > , < = , > = and < > . The
logical operators are AND, OR, NOT, and XOR.
Order of Operations: Sequence in which computations are
performed in a mathematical expression. Also called
Heirarchy of Operations.
Parallel Port: A port used for simultaneous transmission of data
one byte at a time over multiple wires, one bit per wire.
Parity Bit: A 1 or 0 added to a group of bits that identifies the sum
of the bits as odd or even.
Peripheral: Any accessory device attached to the computer such
as a disk drive, printer, modem or joystick.
Pitch: The pitch of a note is determined by the frequency of the
sound wave. The higher the frequency of a note, the higher
it's pitch. See Frequency.
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