Can we have RPN back?

[Tim Wessman]

Basically, the ENTER key placement reasoning went something like this in my mind.

1) There must be a large enter key.
2) The primary assumption we have about our users is that they are going to be more familiar with other keyboard layouts. Thus cues from software keyboards on phones and computers should be taken into account.
3) ENTER has long since standardized on *essentially* all keyboard being on the far right of the keyboard.

That would be enough to finalize it in my mind. There were plenty more reasons, and plenty of times we'd want "just one more key" for something that it was tempting at times to make it a standard width.

The same reason why the bksp/delete key uses a more universal symbol instead of test. Symbols were attempted to be used as much as possible on the keyboard to aid with making it much more international.

The ESC key should have gone on the left top corner. However, there was no way to do so without breaking up the application buttons which is so critical to the central operation of the calculator. Hence we decided that consideration overrode the "esc being in the top left" standard.


Keyboard layout is one of those very difficult things that completely is impacted by the way you operate the device. There are basically two large groups that are roughly split down the middle. Either you operate with two hands while holding the device, or you use one hand and press down on the calculator. If you are one vs the other, then the other ideal layout for that other group just doesn't make sense to you and seems very inefficient.