Commodore 128 Programmer's Reference Manual page 742

732 COMMODORE 128
BASIC: Acronym for Beginner's All-purpose Symbolic Instruction Code.
Baud: A unit of serial-data transmission speed. The term was originally used for
measuring telegraph transmission speed. Three hundred baud is approximately
equal to a transmission speed of 30 bytes, or characters, per second.
Binary: A base-2 number system. All numbers are represented as a sequence of Os and
Is.
Bit: The abbreviation for Binary diglT. A bit is the smallest unit in a computer's
memory. Each binary digit can have one of two values, 0 or 1. A bit is referred to
as set or " on" if it equals 1. A bit is clear or " off" if it equals 0.
B it C ontrol: A means of transmitting serial data in which each bit has a significant
meaning and a single character is surrounded with start and stop bits.
B it Map Mode:
control every pixel on the screen.
B order Color: The color of the edges around the screen.
Branch: To jum p to a section of a program and execute it. GOTO and GOSUB are
examples of BASIC branch instructions.
Bubble M em ory:
" pockets" or " bubbles" to store data.
Burst Mode: A special high-speed mode of communication between a 1571 disk drive
and a C l 28 computer, in which information is transmitted at many times the speed
of the 1541 Disk Drive.
Parallel or serial lines used to transfer signals between devices. Computers are
Bus:
often described by their bus structure (i.e., S-100-bus computers, etc.).
Bus N e tw o rk : A system in which all stations or computer devices communicate by
using a common distribution channel or bus.
A group of 8 bits that make up the smallest unit of addressable storage in a
Byte:
computer. Each memory location in the Commodore 128 contains 1 byte of
information. One byte is the unit of storage needed to represent one character in
memory. See Bit.
C a rrie r Frequency:
that is modulated to encode binary information.
C haracter: Any symbol on the computer keyboard that is printed on the screen.
Characters include numbers, letters, punctuation and graphic symbols.
C h aracter M em ory:
character patterns that are displayed on the screen.
C h aracter Set:
consist of upper case letters, lower case letters and graphic characters.
C h aracter String Code:
character in the computer's memory.
Chip: A miniature electronic circuit that performs a computer operation such as
graphics, sound and input/output.
Clock: The timing circuit for a microprocessor.
Clocking: A technique used to synchronize the sending and receiving of data that is
modulated to encode binary information.
C oaxial Cable:
An advanced graphic mode in the Commodore 128 in which you can
A relatively new type of computer memory, it uses tiny magnetic
A constant signal transmitted between communicating devices
The area in Commodore 128's memory that stores the encoded
A group of related characters. The Commodore 128 character sets
The numeric value assigned to represent a Commodore 128
A transmission medium, usually employed in local networks.