[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 queasy ...

We’ve all heard it a thousand times – they don’t make ’em like they used to. Sometimes, that’s for good reason, but there is a certain build quality to electronics of the mid-20th century that is hard ...

The new device will have a 4.8-inch color touch-panel LCD, with enough screen real estate for students to view both graphs and equations simultaneously. According to the company, the new calculator ...