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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White keyboard overlay with normal function codes. To enter this command press: Mint out of the box, everything like new except the cardboard box. Excellent condition, fully functional. The HPA memory module added 64 registers.

HP -41CX Quick Reference Manual

A picture of the serial interface connector. One sheet of sticky labels for overlays, completely new.

Without most of the keyboard labels, to be used with keyboard overlays. A very popular calculator.

Solved: HPCX manuals – HP Support Community –

Rather large with no other markings. The HPA “X-memory” module increased the extended memory space by registers bytes.

This early HPC unit is equipped with golden ball-contacts for the external power supply. Memory space is shared between programs and data storage, allocation is performed using the SIZE command. Large battery pack or external power supply. This time I didn’t install a little spring which obstructed the card slot – now it works!! A unique feature was the barcode reader “wand” that allowed to read in programs that were printed on paper in the form of barcodes.

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Delivers highly accurate results! Only one such module could be installed. This code-exchangability created a huge base of programs. 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 following files are available on the Systemyde website: For plain string input do not use XEQ. Older units will be completely reset, newer units perform a “soft reset”.

A HPCV with added extended memory, a built-in timer module and the extended functions module. One one side marked “”. Infrared module HPA, serial number Allowed for “synthetic programming” where machine code was accessible thru illegal commands. Also, there isa label reading “34 03 “.

Replaced the rubber wheel – now it doesn’t work any more at all! All keys could be re-assigned to user-defined commands. The “flying goose” and the “backwards flying goose”. The graphics display of some of the Pioneer models is much better in this respect. Apparently, only two such modules could be installed. Up to four such modules could be added to reach a total of registers. Data inside extended memory is organized in files which can store programs or data.


Note that the printer A can power the HP Math 1 ROM module, part no. Refer to the table on the back of the calculator for special keys ie. The HPA quad memory module added registers giving a total of registers.

Did not put back the label which covers the screws. About 70 magnetic cards for the magnetic card reader. Cardboard box with 6 rolls of paper for the A or A printer.

Especially the possibility to access ROM code made it the preferred toy for “hackers”. And although it looks modern it is rather slow. Interestingly, the “print jp41cx command is listed incorrectly as “PRST”.

It is also one of the first calculators with support for alphanumeric strings – but in my opinion this hp41cxx the display hard to read. The remaining registers can be used for program code.

Rather, indirect access must be used.