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
constants 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
Interchange. 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
instructions into machine-language instructions.
GL-1
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