Actually he refers to the Texas Instruments TI-83 Plus, 84 Plus, 89 Titanium, TI-Nspire series or even Casio FX-9860G and Prizm graphic/graphing calculators we use in late hi school and college. Being the main Omnimaga website theme, several people around here love to program games, be it using the built-in program editor or via assembly/C language, for those devices, and some other people around here used to do so. Of course we got some computer/web programmers too, though.