Spend your money on a PalmOS PDA and then get Power 48 which emulates the Saturn CPU and runs the HP calc ROMs, it's free and GPL'ed. Though if you can do with something simplier I've been using RPN as others have said, for years (though it's now $18).
The IR Remote Control
Spend your money on a PalmOS PDA and then get Power 48 which emulates the Saturn CPU and runs the HP calc ROMs, it's free and GPL'ed. Though if you can do with something simplier I've been using RPN as others have said, for years (though it's now $18).