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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This early HPC unit is equipped with golden ball-contacts for the external power supply. This time I didn’t install a little spring which obstructed the card slot – now it works!!

Data inside extended memory is organized in files which can store programs or data. One register can hold up to 7 program steps 7 bytes. The HPA “X-memory” module increased the extended memory space by registers bytes. Large battery pack or external power supply.

Program “ST” speed test is the core speed test program. Both reader and mnual in excellent condition. You can enter a program that starts with a local label.

Older units will be completely reset, newer units perform a “soft reset”. Magnetic program card holder with 38 unmarked magnetic cards and one red card used to clean the magnetic head of the card reader.


This code-exchangability created a huge base of programs. B, September manaul, printed in Singapore. Mint out of the box, everything like new except the cardboard box. Note that the printer A can power the HP Apparently broke at some time because the enclosure is glued. The HPA memory module added 64 registers.

Cardboard box with 6 rolls of paper for the A or A printer. German, hp41vx, A picture of the serial interface connector. Replaced the rubber wheel – now it doesn’t work any more at all!

Solved: HPCX manuals – HP Support Community –

Within a program local labelsA – J and a – j can be used. Rather large with no other markings. Up to four such modules could be added to reach a total of registers. Also, HP provided a respectable number of software packages as well as ROM modules with pre-programmed solutions. 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.

German, pages, 1st issue, Also, there isa label reading “34 03 “. To enter this command press: One blank overlay, one standard functions overlay both plastic. Register memory shared with program memory. None powered from HP calculator. A calculator with cult status.

  ISO 9927-1 PDF

Hp HPCX Manuals

Various information on “synthetic programming”. Refer to mnual table on the back of the calculator for special keys ie. Reportedly, HP never built this power supply but rather release a hp41cxx battery pack that had the connector built-in. Front and back close to mint, a few scratches on the sides. Unfortunately, my cleaning efforts made things even worse not visible on the picture.

One with standard key symbols, one with no labels. It is also one of the first calculators with support for alphanumeric strings – but in my opinion this makes the display hard to read.


Allowed for “synthetic programming” where machine code was accessible thru illegal commands. No scratches on the back, keys feel a bit worn from extensive use, front dirty seems someone glued a keyboard overlay to the unit.

The remaining registers can be used for program code.