HP-41 Contrast

[larthurl]

I seem to recall that there is a way to adjust the display contrast on an HP-41. I don't remember how to do it and can't find it in the manuals I have.
Anyone know how?

Thanks

.....Art

[CY-CL]

You need a HEPAX module or MCODE.

Here a description. Sorry German:

Calculator Nostalgia

[AndiGer]

At the bottom of the German article you find a link back to the old forum on this website
http://www.hpmuseum.org/cgi-sys/cgiwrap/...read=84888
Merry Christmas to all
Andi

[hth]

It is described in the book "HP-41 MCODE for beginners" page 115-116, only works on Halfnuts.

Håkan