Commodore 128D - Page 401

r
GLOSSARY
P
n
GLOSSARY
This glossary provides brief definitions of frequently used computing
terms.
Acoustic Coupler or Acoustic Modem: A device that converts
digital signals to audible tones for transmission over telephone
lines. Speed is limited to about 1,200 baud, or bits per second
(bps). Compare direct-connect modem.
Address: The label or number identifying the register or memory
location where a unit of information is stored.
Alphanumeric: Letters, numbers and special symbols found on the
keyboard, excluding graphic characters.
ALU: Arithmetic Logic Unit. The part of a Central Processing Unit
(CPU) where binary data is acted upon.
Animation: The use of computer instructions to simulate motion of
an object on the screen through gradual, progressive
movements.
Array: A data-storage structure in which a series of related con
stants or variables are stored in consecutive memory locations.
Each constant or variable contained in an array is referred to as
an element. An element is accessed using a subscript. See
Subscript.
ASCII: Acronym for American Standard Code for Information Inter
change. A seven-bit code used to represent alphanumeric
characters. It is useful for such things as sending information
from a keyboard to the computer, and from one computer to
another. See Character String Code.
Assembler A program that translates assembly-language instruc
tions into machine-language instructions.
397
GLOSSARY