The Systemyde 41CL takes advantage of modern technology to significantly add to the capabilities of the Hewlett-Packard 41C system. The 41CL circuit board replaces the original CPU board in the calculator and provides all the features of an HP-41CX except for the Time Module.

The 41CL is an upgrade created by replacing the CPU circuit board in a 41C/CV/CX with the 41CL circuit board. This replacement is only possible for calculators that actually have a CPU circuit board. The easiest way to tell if this is the case is to look at the HP-41 display.

The 41CL manual has been updated, incorporating the various application notes that have been generated in the past. I also cleaned up the formatting and reorganized the chapters to make it look more "professional".

2016年1月26日 · - What is the 41CL? You supply a fullnut HP 41 and replace the original CPU board. o The Systemyde SY-41CL takes advantage of modern technology to significantly add to the capabilities of the Hewlett-Packard 41C system.

The 41CL takes advantage of modern technology to significantly add to the capabilities of the 41C system. In particular, the 41CL provides the following features: • All features of an HP-41CX except for the Time Module. CX Time functions (the soft-ware) are included, but a Time module plugged into a Port is required for full timer functionality.

How can I have a HP-41CL? The possibility of having new production? I entered the site and the author made ​​it clear that one of 41CL stayed with him.

The HP-41C series are programmable, expandable, continuous memory handheld RPN calculators made by Hewlett-Packard from 1979 to 1990. The original model, HP-41C, was the first of its kind to offer alphanumeric display capabilities. Later came the HP-41CV and HP-41CX, offering more memory and functionality.

2024年4月5日 · It isn't the latest version and the firmware hasn't been updated but it will give you the 41CL experience. It's currently installed in a tall keys 41C with the serial port (untested) via one of the port covers.

HP-41CL is a brain transplanted HP-41- a new motherboard in the original HP-41 body. With huge amount of flash memory, it contains all known HP-41 roms. And with 50x turbo speed, you have a massive, superfast swiss army-knife calculator. The HP-41CL board is created by Monte Dalrymple and sold through his company, Systemyde. I have created some ...

41CL Update Functions Manual: 05/31/2020: 41CL Clone Functions Manual: 12/06/2019: HP-41 MAXX Manual (5A) 01/09/2024: HP-41 MAXX Manual (5B) 01/04/2025: 41CL Memory Reference: 02/27/2025: 41CL Memory Reference (V2 hardware) 02/27/2025: 41CL Memory Reference (.txt) 02/27/2025: 41CL Memory Reference (V2 hardware) (.txt) 02/27/2025: 41CL Memory ...