Two TI 59 hardware hacks

Two TI 59 hardware hacks

Oliver Knill
TI Program library


In 1982, I built two interfaces for the TI 59 calculator. One was an "external flag" which could be used as an external joy stick, an other was a interface to control appliances. I wrote this up for a special edition of "Chip". Both things worked and the calculator survived all the surgery.


put online in August, 2005