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American National Standards Institute (ANSI)
A standards organisation responsible for the ANSI.SYS file used under DOS to control various attributes of the display of characters on the screen. This can be
mimicked by other computers using ANSI terminal emulation to enhance the interface of PC-based bulletin boards.
American Standard Code for Information Interchange (ASCII)
ASCII character set, ASCII encoding, ASCII file transfers.
Application
A program or group of programs belonging to a class of software designed to manage a particular computing task. Thus, Microsoft Excel is a spreadsheet
application. Applications need an operating system in order to work.
Archie
An Internet Service which assists in locating files available from public FTP sites, providing you know the name of the file.
ASCII character set
American Standard Code for Information Interchange allows different computer types to share information. Each of the 128 ASCII characters are described by a
7-bit code, most of which are represented by a key on the computer keyboard. In practice, ASCII means the same as text. See binary file, extended character set.
ASCII encoding
The process of converting binary files into ASCII files so that they can be transmitted as e-mail. The common types of encoding are BinHex, MIME, and
uuencode.
ASCII file transfer
The transfer of a file containing 7-bit text type data. Although the term is in common use, ASCII is a set of codes/characters and not a standard for file transfers.
Aspect Ratio
The ratio of a screen's width to its height. Almost all computer monitors, and conventional television screens have an aspect ratio of 4/3.