go80c (o2s.emul.hp80c) on Google Play
Hardware emulator for HP 80 first financial calculator from HP.This one is a working emulation: DAY and DATE functions works !!Touch led display to see the back labelGet a manual, this is the first financial calculator from HP, so its use is very peculiar, look closely at the manual to correctly use this calculator.On S5 devices, long press the right hardware button to get the menu.