Glossary
Application program
A software program designed to perform a specific task, such as a
word processing or spreadsheet program.
ASCII
American Standard Code for Information Interchange. A
standardized coding system for representing characters, such as
numbers, letters, and graphic symbols. An ASCII character
occupies one byte of storage. Files transmitted in ASCII code
can be used by many different computers, printers, and
programs.
Asynchronous
A method of data transmission in which one machine sends
data one character at a time to another, without either machine
preparing for the transmission.
Backup
An extra copy of a program, data file, or disk, kept in case your
working copy is damaged or lost.
Batch file
A type of file that lets you execute a series of MS-DOS com-
mands by typing one command. Batch files are text files with
the filename extension .BAT. In a batch file, each command is
entered on a separate line. When you type the filename, all the
commands in that file are executed sequentially.
Baud rate
A measure of the speed of data transmission. Usually equivalent
to bits per second.
Bit
A binary digit (0 or l). The smallest unit of computer storage.
The value of a bit represents the presence (1) or absence (0) of
an electric charge.
Glossary 1
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