KermMartian writes: In an effort to make your trusty graphing calculator more like a computer, a shell called Doors CS has been developed, with an integrated networking stack, CALCnet2.2. The protocol is demonstrated in a nine-calculator pong-type demo at http://www.youtube.com/watch?v=4Mjn98Bs2Cg, and the many file management, GUI, and other features of Doors CS can be seen at http://www.youtube.com/watch?v=9FRi6HX8mP4. All the associated software is available for download at http://www.ticalc.org/archives/files/fileinfo/430/43068.html.
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