Earliest handheld / battery calculator with hyperbolics?

[rprosperi]

(05-09-2018 03:26 AM)Steve Simpkin Wrote:  After looking at the pictures of the HP-27 keyboard, I don't see hyperbolic keys like I do on the HP-32E. I think that Demosthenes is right and the HP-27 features page is wrong.

You're both right, the 27 does not have hyberbolics. You should let Dave Hicks know about the error in the table.