[Owen] got down and dirty by adding a touchscreen to his TI-84 graphing calculator. The dirty part is the z80 assembly code he wrote to use the linkport as a UART (assembly always makes us feel ...

Color graphing Calculator with High resolution LCD display (over 65, 000 colors) Natural textbook display Picture plot technology/ Real life images 3 D graphing capability Built in conic sections ...

This includes working buttons and functions on an overlay of each of these calculators but also pixel-accurate screen outputs for each of these. The graphing calculators have more of what we would ...