calculators without OFF

[vaklaff]

(09-13-2020 05:55 PM)Thomas Okken Wrote:  The HP-41C doesn't have OFF printed anywhere on the keyboard, either. And yet, I have always managed to turn mine off whenever I wanted to, without waiting 10 minutes. I don't remember having issues turning off my HP-10C and 16C, either, back in the day.

Yeah, yeah :-) I take my question back. My second attempt is: Do you know any calculator running on batteries that can’t be switched off from its keyboard?