TI-68
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The TI-68 was Texas Instruments's last available pocket programmable calculator. It was discontinued in the 2002 timeframe. A wealth of features and 440 bytes of RAM (actually 300 keystroke steps) made it a versatile pocket calculator. No program could contain more than 80 steps, which limited complexity. Some features included a simultaneous equation solver, a polynomial root finder, and a recall feature, which would display the last equation entered and its answer.
External links
- Features of the TI-68 (http://education.ti.com/us/product/tech/68/features/features.html)
- An Ode to the TI-68 (http://www.streettech.com/archives_gadget/ti68Calculator.html)