How would you rate your keyboards?

[Thomas Okken]

(04-07-2018 10:28 AM)Maximilian Hohmann Wrote:  - other than the functionally similar HP-67 which has 3 shift keys the Ti-59 does the same with one. I appreciate that.

You don't count INV as a shift key?

I like how their use of INV helps produce an uncluttered keyboard, but the downside of that arrangement is that some operations take more keystrokes, e.g. INV 2nd sin for arcsin.