Simple Programming Language or Set of Programming Commands

[deetee]

Hi all!

The next calculator I'm going to build should cover some programming features but unfortunately the resources (i.e. code size) are limited.

So far I can edit and run sequences containing all operations of the calculator. But a "complete" programming language has to contain some decision and repetition capabilities. Also some simple input and output sequences would be very convenient.

Are there any examples for small, easy and simple complete programming languages or sets of commands?

For instance my HP15c seems to have easy and complete programming features - but it could be more convenient.

Thanks in advance and regards
deetee