Keyboard Layout HP-41C and early models

[Didier Lachieze]

(06-12-2019 01:32 PM)burkhard Wrote:  I really hate that there were two layout flavors, but that is history. The coming WP-43S project sadly adopts a 3rd convention for a classical RPN machine. They are putting the math operators on the left (like the older HP machines), but using the top-to-bottom order (like the newer HP machines).

That’s a pity… we don’t need a third convention. Each of the two HP keyboard layouts has its own merit but mixing the two in a different one is just adding confusion IMHO.

Btw, the second layout with the operators on the right was used by HP as early as 1973 with the HP-46.