The Museum of HP Calculators
HP Forum Archive 19
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|Anode and cathode driver chips interchangeable on Classics?|
Message #1 Posted by Dan W on 8 Aug 2009, 1:45 p.m.
On the classics (35, 45, 55, 70, 80, and lets include the 65 and 67) are the anode and cathode driver chips electrically interchangeable? I see that the HP part numbers changed from time to time but the pinouts appear identical in all.
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