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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
You need a HEPAX module or MCODE.

Here a description. Sorry German:

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

HÃ¥kan
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