He’s running Android Donut on a TI nSpire CX graphing calculator. Unlike just about every other TI calculator, homebrew developers are locked out of the nSpire CX and CX CAS.

A far cry from your high school TI-82 (or for you honors students, the TI-85), the TI-Nspire CX ($165) may. The new TI centers around a new 16-bit 320×240 high-resolution color display with powerful ...