Portable Character Set is a set of 103 characters which, according to the

POSIX The Portable Operating System Interface (POSIX; ) is a family of standards specified by the IEEE Computer Society for maintaining compatibility between operating systems. POSIX defines application programming interfaces (APIs), along with comm ...

standard, must be present in any character set. Compared to

ASCII ASCII ( ), an acronym for American Standard Code for Information Interchange, is a character encoding standard for representing a particular set of 95 (English language focused) printable character, printable and 33 control character, control c ...

, the Portable Character Set lacks some

control character In computing and telecommunications, a control character or non-printing character (NPC) is a code point in a character encoding, character set that does not represent a written Character (computing), character or symbol. They are used as in-ba ...

s, and does not prescribe any particular value encoding. The Portable Character Set is a superset of the Basic Execution Character Set as defined by

ANSI C ANSI C, ISO C, and Standard C are successive standards for the C programming language published by the American National Standards Institute (ANSI) and ISO/IEC JTC 1/SC 22/WG 14 of the International Organization for Standardization (ISO) and the ...

Character Classes

Characters grouped by their class. (facsimile, not machine readable)

References

{{DEFAULTSORT:Portable Character Set Character sets POSIX