Iota and Jot are two minimal FunctionalProgrammingLanguage''''''s (combinatorial, rather) aiming to be TuringComplete with the minimal number of symbols. Each of them uses only two symbols (Iota: '''i''' and '''*'''; Jot: '''1''' and '''0'''). Jot makes it particularly easy to obtain the GoedelNumbering for a program.

* http://ling.ucsd.edu/~barker/Iota/

Zot is an extension of Jot which allows input and output.

* http://ling.ucsd.edu/~barker/Iota/zot.html

See also: UnLambdaLanguage