Here's a nice calculator that will work with the Pocket Edge. The TI-86 graphing calculator is great as a standard calculator, but also great for engineering and calculus. Graph and compare functions, perform bit manipulation and convert between numeric bases. Solve differential equations, plot vector fields. Write programs in TI-BASIC. Andy-86 is a TI-86 emulator. It is distributed free of charge.
http://download.pandaapp.com/android...62-id2669.html
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Looks like the real thing on the Pocket Edge. Here's a manual from TI:
http://education.ti.com/downloads/gu.../86bookeng.pdf