(definition)
Definition: The set of all possible symbols in an application. For instance, input characters used by a finite state machine, letters making up strings in a language, or symbols in a pattern element. In some cases, an alphabet may be infinite.
See also don't care.
Note: An alphabet may be as simple as the booleans 1 and 0, or as rich as the key words and token types in a programming language.
Author: PEB
If you have suggestions, corrections, or comments, please get in touch with Paul E. Black.
Entry modified Fri Dec 17 12:02:04 2004.
HTML page formatted Wed Oct 26 09:47:10 2005.
Cite this as:
Paul E. Black, "alphabet", from
Dictionary of Algorithms and Data
Structures, Paul E. Black, ed.,
NIST.
http://www.nist.gov/dads/HTML/alphabet.html
