I've just found a pretty old but still working CASIO watch in my drawer.
It has a small LCD display as it can be seen in the image above. I believe I can safely disassemble the watch and take out the LCD unit.
Is it possible to drive this kind of LCD with Arduino? What are the basic principles of it?
AC voltage? That's strange. The watch works with a simple battery. That's not AC voltage.
So you say it's possible but doesn't worth it?
Osgeld:
its possible, it requires AC voltage (if you drive dc though it the crystals will migrate with the current flow), its going to be a pain in the butt