I'm considering buying an older TI calculator such as the TI-81/82/85/86 since they're only like 10$ on ebay right now. The reason I'd buy it would be to program on it. Does anyone have any recommendations? Also: I currently own a TI-83+ and it would be great if I could link it to the calculator I buy.
Older TI Calculators
Summary:
I'm considering buying an older TI calculator such as the TI-81/82/85/66.