[Pierre Parent] and [Ael Gain] have certainly taken these values to heart with their open handheld graphing calculator. While the duo isn’t giving away the calculators themselves, they are ...

The TI-83 (not Plus), TI-86, TI-92 and the TI-92 Plus are no longer manufactured. Certainly these older calculators may still be used in courses allowing any calculator. The designation TI-89 or ...

It looks like we missed the boat on this one but just in case you missed it everywhere else on the Internet, last Saturday [Matt Stack] introduced the world to a completely open source calculator.

The first commercial graphing calculator was introduced by the Japanese firm of Casio Computer ... Casio CFX-9850G Handheld Electronic Calculator National Museum of American History Texas Instruments ...

Hewlett-Packard Corporation joined the market in early 1972 with the HP-35 scientific calculator. It could not only add ... Casio CFX-9850G Handheld Electronic Calculator National Museum of American ...