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Additional Pictures 

 

This HP-41C Programmable Calculator  was manufactured in January 1981 by
Hewlett-Packard in the United States (Date code 2103A » wk 03 yr 1981).
The HP-41C is powered by 4 N-sized alkaline batteries.
The battery holder for the 4 M-sized disposable batteries.
The printed circuit board (PCB) of the HP-41C  is centered around a
CPU with 56-bit Registers and supported by a myriad of other chips.

Close-up view of the custom-made CPU with RAM, ROM, and power supply.

Close-up view of the two display drivers of the HP-41C in Chip-on-Board (COB) technology.


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If you have additions to the above article please email: joerg@datamath.org.

© Joerg Woerner, October 29, 2009. No reprints without written permission.