Whilst playing with my uWatch, and thinking about the Phoenix 35S project I wondered would it be possible to modify a current Casio 4 function calculator watch into a scientific calculator version.
So I got myself a cheap Casio CA-56 calc watch and took it apart.
It actually looks quite do-able. Both the LCD and keypad are held in place by a plastic mould, and both are connected via zebra strips.
The PCB is 0.5mm and looks to be easily duplicated. With enough room for a small thin LCC package.
Front panel would be an issue though.
Comments about the pointlessness of such a project invited! :->
Dave.