Re: HP 70 and 80 calculator??? Message #3 Posted by Allen on 9 Oct 2007, 9:39 a.m., in response to message #1 by Eric Fries
I would guess that the calculator is an HP80 since the nomenclature on the face most closely fits that model. You could try the button in the lower right to see what the electronics are.
PI -> HP35
0 -> HP70
1 -> HP45 or HP80
R/S -> HP 55,65, or 67 (not likely)
The Franken-calc CLX and STO keys are probably from a HP-35, while the six orange keys are obviously from a HP-70.
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NOTE: This is not a copy of the picture, but a direct link to http://members.chello.cz/eckstein/hp870-1.jpg
Edited: 9 Oct 2007, 1:08 p.m.
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