www.rskey.org/detail.asp?manufacturer=Casio&model=PB-2000C
This curious beast is actually programmable in the C language. You write your program in plain (pre-ANSI) C, save it from the built-i n text editor, compile it, and run the result. This is true C we're talk ing about, ladies and gentlemen, not some emulation/simulation: you get the whole works, pointers and all, so it is in fact quite possible to lo ck up the machine for good with a bad pointer assignment, for instance. A small RAM-based file system implementation is used for storing program and data files. The machine also has the ability to interface with exte rnal peripherals.
It can even handle fairly obfuscate d C code, such as the following single-line monstrosity computing the va lue of Pi to an arbitrary number of digits: long a=10000,b,c,d,e,*f,g;
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