The HP41 Corner

New book from The Calculator Store: HP41 Repair: A Beginner's Guide to Repairing your HP41 Calculator. 14.00€ paperback version, 9.99 Kindle version. Only in Amazon

We have been told that the book is not visible in some of the amazon websites worldwide. Here we offer links to all of them:

amazon.com
amazon.co.uk
amazon.de
amazon.fr
amazon.es
Amazon.it

Kindle and paperback versions available now!

The HP41c calculator, produced from 1979 until 1990, was the standard in engineering and sciences during most of its life. Programmable, alphanumeric, with a high contrast LCD screen, and expandable, it was a true computer in your pocket. Here is our web hommage to it.

Its capabilities could be extended by means of ROM modules with additional functions, and with interfaces it could use printers, plotters, mass storage devices, bar code readers, measurement instruments, etc.

Recently, the user community has developed both new software in ROMs (like the Sandmath family) and hardware: a circuit that substitutes the original and throroughly updates the calculator in terms of speed, memory and functions, including all known modules ever developed (the HP41CL from Monte Dalrymple)

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4 x Piece for repair of back case of HP41C Product no.: brokenback4 4 pieces for repairing HP41c back cases. This piece is for repair of HP41c back halves, specifically the support of the upper screw heads that is often damaged, and very difficult to repair in a lasting way. 50.00 € * Old price 72.00 € In stock (2) Compare	Thermal Paper for HP Printer - single roll Product no.: HP-82175 Thermal Paper for HP calculator printers: (HP 82240a & b, HP-92 & HP-97, 82143a & HP-IL printer) single roll 5.00 € * In stock (2) Compare	Memory module for HP41c - USED Product no.: HP Memory Memory for HP41c calculators (64 registers) 15.00 € * Not in stock Compare
Quad Memory module for HP41c - USED Product no.: HP Quad Memory Quad Memory for HP41c calculators (256 registers) 30.00 € * Not in stock Compare	Full-nut processor Full-nut processor - please select C or CV type, or installation in your machine Waiting for new units 15.00 € * (5) Compare	Keyboard support for repairs Product no.: keyboard support Piece required for the lower post repair of HP41c calculators. 25.00 € * In stock (1) Compare
Navigation Pac for HP41c - USED Product no.: HP Navigation Pac Navigation Pac for HP41c calculators 60.00 € * Not in stock Compare	Math Module Product no.: MathPac Math Module for HP41c 40.00 € * Not in stock Compare	Financial Pac for HP41c - USED Product no.: HP Financial Pac Financial Pac for HP41c calculators 45.00 € * Not in stock Compare
Stat 1 module Product no.: Stat 45.00 € * In stock Compare