New calculator interface

[harryp]

Interesting idea but truth is that once something develops a certain way, it becomes convention. We use steering wheels in cars because that's how they decided to do it, although you could use a joystick or even a touchpad. A calculator display is not much changed from the old button cash registers that I used as a kid, or adding machines. And you can't effect a change unless the change is so definitive that it proliferates - think laser disc vs DVD. I got a Casio Classpad 400 years ago because working with the stylus intrigued me but in the end I just went back to the machines that I had always used.