HEWLETT PACKARD HP 41CX

Description

Brand: HEWLETT PACKARD
Model: HP 41CX
Type: Programmable scientific RPN calculator
Picture: HP 41CX
Batteries: Type N x 4
Lifetime: Introduced: 1983
Terminated: 1990
Notes: This model of the series has the larger memory capacity introduced with the HP 41CV and it has a built-in clock module which was optional for the other two models in the HP 41C series.

There was also some information on the HP 41CX on HP.com but that page is no longer available. You can find a cached version on archive.org here (link validated 2025-12-06).

For more information on this beauty please refer to the better sources, like The Museum of HP Calculators (link validated 2025-12-06).
Series: The HP 41C series must be the top-of-the-bill calculator design of all time. It’s the successor to the HP 67. Even today this calculator is still totally up-to-date and usable. It’s my all-time favourite series of calculators. I am still utterly amazed how well thought out and capable this series of calculators is. Very usable in 1979 and still very usable today (2024 when I write this).

The HP 41C series has three models, here in chronological order:

Peripherals

There many peripherals available for this calculator.

The 41CX has four easily accessible extension slots which can be used for ROM modules, a HP-IL connection, card reader, printer, even an HP 67 compatible card reader which translates HP 67 programs to HP 41 programs on the fly.

The peripherals I own myself are the HP 82143A Peripheral Printer and the 82104A Card Reader.