The HPCX was the same as the HPCV but added the Time module The phonebook-sized manual dwarfed the calculator, let alone the tiny ROM. View and Download HP CX quick reference manual online. HPCX Calculator pdf manual download. Hp HPCX Pdf User Manuals. View online or download Hp HPCX Service Manual, Quick Reference Manual.

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Both reader and manual in excellent condition. Only one such module could be installed.

Solved: HPCX manuals – HP Support Community –

Without most of the keyboard labels, to be used with keyboard overlays. Infrared module HPA, serial number The remaining registers can be used for program code.

I mankal a couple of CL myself, and it has happened that once per calculator so far. This code-exchangability created a huge base of programs.

A calculator with cult status. Replaced the rubber wheel – now it doesn’t work any more at all! Also, HP provided a respectable number of software packages as well as ROM modules with pre-programmed solutions.


Various information on “synthetic programming”. A very popular calculator.

Front and back close to mint, a few scratches on the sides. This time I didn’t install a little spring which obstructed the card slot – now it works!! This early HPC unit is equipped with golden ball-contacts for the external power supply. After the listing has been stopped when this “END” is displayed switching to PRGM mode will display the program and it is possible to delete it step-by-step to reclaim program memory.

These local labels are not visible outside of the current global program. The HPA quad memory module added registers giving a total of registers. Unfortunately, my cleaning efforts made things even worse not visible on the picture.


The “flying goose” and the “backwards flying goose”. Excellent condition, fully functional. Labels and mutli-character string labels.

Rather, mabual access must be used. Mint out of the box, everything like new except the cardboard box. German, pages, 1st issue, Apparently, only two such modules could be installed. Rather large with no other markings. Also, it mznual not possible to use “CLP” to delete the memory occupied by the program! Refer to the table on the back of the calculator for special keys ie.


Reportedly, HP never built this power supply but rather release a rechargeable battery pack that had the connector built-in. Older units will be completely reset, newer units perform a “soft reset”.

Hewlett Packard HP-41C/CV/CX/CL

One blank overlay, one standard functions overlay both plastic. The HPA memory module added 64 registers. Register memory shared with program hp41cd.

One sheet of sticky labels for overlays, completely new. All keys could be re-assigned to user-defined commands.