The most important calculator in the calculator, not least because it was the first one i bought in the early 2000s. It is also a joyfully large mains powered heavy duty calculation machine with a printer. The calculator is powered by a Hitachi HD385138 system and has the basic arithmetic functions though [add] has a large key and [subtract] also a larger (though slightly smaller than add) key in red. This is the sort of machine used for a small company's payroll, accounts or someone's expenses. There is also a lozenge marked key for sub-totals.
The calculator also has a memory function and a few other keys marked with letters, the functions of which remain unclear. Maybe a manual is around somewhere. The printer works great, i replaced the ribbon a short while ago.
