The Museum of HP Calculators

HP Forum Archive 10

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Re: HP-41 internal upgrade. ????
Message #1 Posted by Andreas Müller(GER) on 13 Jan 2003, 6:18 p.m.

Hi Daniel, what can be seen on the picture you linked to is in deed a Speedup circuit. The speed is switched up or down by a combination of two keys. I assume 'User and Alpha' or 'User and Prgm'. The unit you have was AFAIK never produced commercially. Regards, Andreas

      
Re: HP-41 internal upgrade. ????
Message #2 Posted by Daniel Sancho on 14 Jan 2003, 9:44 a.m.,
in response to message #1 by Andreas Müller(GER)

Thank you very much. Andreas


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