Waldemar Kornewald <wkornew@xxxxxxx> wrote: ...I don't know if you've ever used one, but I love my TI-92+....(*Apologies to Waldemar up front, if necessary. I'm not sure.)
I think this illustrates a fundamental problem with open source software (and with engineering in general?): the gap between the producers and the consumers. Math-gifted people who love their calculators make design decisions for the general population.
So, a one-line expression screen should be sufficient. Add an "insert" button next to the screen. When navigating the history the current expression will be kept, so you can recall previous calculations and insert entries from the history into the the current expression (i.e.: combine multiple calculations). This could also replace the annoying "M" buttons (MC, MR, M-, M+).
A "delete from history" button could be useful, too (only visible when navigating history).
I hope that the calculator will not have any menus. The different modes should be actived using expand/collapse buttons on the calculator.
It would be nice if the history (and current expression) could be preserved between restarts. But that's less important.