On my hp 11c calculator, whenever I try to use any of the 5 left hand upper corner white-text functions (SQR, ex, 10x, yx, 1/x), the calculator returns an "Error 4" message. What could the problem be?
You have probably switched on the USER-mode. Thus these keys try to execute programs A-E which apparently don't exist. You can switch it off with: f USER
Kind regards
Thomad
(08-11-2015 07:00 PM)Thomas Klemm Wrote: [ -> ]You have probably switched on the USER-mode. Thus these keys try to execute programs A-E which apparently don't exist. You can switch it off with: f USER
Kind regards
Thomad
You were absolutely right. I switched it off using f USER and it worked. Thanks a lot.