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The HPC/41CV Alphanumeric Full Performance. Programmable Calculator. Owner’s Handbook and. Programming Guide. September printed on or above a key (on the Normal mode keyboard or on the Alpha keyboard) are always shown throughout this manual as they would appear in the . (up to four) or step up to an HPCV or HPCX the total number of registers can increase to (64 registers for each memory module). When allocated.

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Rather, indirect access must be used. B, Manuallprinted in Singapore. German, pages, 1st issue, A calculator with cult status. Interestingly, the “print stack” command is listed incorrectly as “PRST”. Note that the printer A can power the HP You can enter a program that starts with a local label. Refer to the table on the back of the calculator for special keys ie. A HPCV with added extended memory, a built-in timer module and the extended functions module.

Hp HPCX Manuals

Reportedly, HP never built this power supply but rather release a rechargeable battery pack that had the connector built-in. Additional 75 Magnetic Cards. Also, it is not possible to use “CLP” to delete the memory occupied by the program!

All keys could be re-assigned to user-defined 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.


Allowed for “synthetic programming” where machine code was accessible thru illegal commands. About 70 magnetic cards for the magnetic card reader. Math hp–41cx ROM module, part no. Labels and mutli-character string labels. Sheet of small adhesive labels with programming functions. Especially the possibility to access ROM code made it the preferred toy for “hackers”. Cardboard box with 6 rolls of paper for the A or A printer.

The HPA “X-memory” module increased the extended memory space by registers bytes.

To execute a program in extended memory it must first be copied to regular internal memory. This code-exchangability created a huge base of programs. One with standard key symbols, one with no labels. Only one such module could be installed. Also, HP provided a respectable number of software packages as well as ROM modules with pre-programmed solutions. One register can hold up to 7 program steps 7 bytes. The graphics display of some of the Pioneer models is much better in this respect.

Infrared module HPA, serial number Bound printout from the pages at hp None powered from HP calculator. Apparently, only two such modules could be installed.

Mint out of the box, everything like new except the cardboard box. Excellent condition, fully functional.

HP HP-41CX Manuals

Type, Precision, Input Mode. 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. Specifies the amount of number registers nnn to allocate. One one side marked “”. Replaced the rubber wheel – now it doesn’t work any more at all!


Apparently broke at some time because the enclosure is glued. Original HPC cardboard box in good condition.

For plain string input do not use XEQ. This early HPC unit is equipped with golden ball-contacts for the external power supply. It is also one of the first calculators with support for alphanumeric strings – but in my opinion this makes the display hard to read. The “flying goose” and the “backwards flying goose”.

Without most of the keyboard labels, to be used with keyboard overlays. And although it looks modern it is rather slow. Magnetic program card holder with 38 unmarked magnetic cards and one red card used to clean the magnetic head of the card reader.