HP 11C with 15C keyboard?

[Dieter]

(02-05-2015 12:30 PM)awink Wrote:  For example (all regarding blue shift):
On EEX-key, instead of >P, the Symbol "Pi" is printed.
On +-Key, instead of x=0, Cy,x is printed.
On the x-Key, instead of x>0, x=0 is printed.

This really sounds like your 11C has some 15C keys. However the functions should be the ones of the 11C, so pressing 3 [ENTER] 4 [g] [EEX] should return 5 and not pi (=3,141592654).

HP really may have re-used some 15C keys for other voyager calculators. I remember a picture of a re-painted key where a close look revealed the original function that could still be seen because of the contours that remain from the injection molding process. Please visit the museum's collector's corner, about halfway down the page ("10C Series Versions").

But maybe I'm completely off track here, so let's have the community give the definitive answer.

Dieter