IBM AT 5170 Technical Reference page 449

AND gate. A logic gate in which the output is 1 only if all inputs
are 1.
AND operation. The boolean operation whose result has the
boolean value 1, if and only if, each operand has the boolean
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value 1. Synonymous with conjunction.
APA. All points addressable.
ASCII. American National Standard Code for Information
Interchange.
assemble. To translate a program expressed in an assembler
language into a computer language.
assembler. A computer program used to assemble.
assembler language. A computer-oriented language whose
instructions are usually in one-to-one correspondence with
computer instructions .
.
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asynchronous transmission. (1) Transmission in which the time
of occurrence of the start of each character, or block of
characters, is arbitrary; once started, the time of occurrence of
each signal representing a bit within a character, or block, has the
same relationship to significant instants of a fixed time frame.
(2) Transmission in which each information character is
individually transmitted (usually timed by the use of start
elements and stop elements).
audio frequencies. Frequencies that can be heard by the human
ear (approximately 15 hertz to 20,000 hertz).
auxiliary storage. (1) A storage device that is not main storage.
(2) Data storage other than main storage; for example, storage on
magnetic disk. (3) Contrast with main storage.
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BASIC. Beginner's all-purpose symbolic instruction code.
Glossary-3