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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Math 1 ROM module, part no.


Replaced the hp-41cc wheel – now it doesn’t work any more at all! Allowed for “synthetic programming” where machine code was accessible thru illegal commands.

Older units will be completely reset, newer units perform a “soft reset”. Maanual out of the box, everything like new except the cardboard box. Apparently, only two such modules could maual installed.

Rather, indirect access must be used. Bound printout from the pages at hp Hp41cx large with no other markings. A HPCV with added extended memory, a built-in timer module and the extended functions module. German, pages, Front and back close to mint, a few scratches on the sides. Apparently broke at some time because the enclosure is glued. The HPA memory module added 64 registers. Within a program local labelsA – J and a – j can be used.


Up to four such modules could be added to reach a total of registers. None powered from HP calculator.

Unfortunately, my cleaning efforts made things even worse not visible on the picture. Note that the printer Hhp-41cx can power the HP You can enter a program that starts with a local label.

This early HPC unit is equipped with golden ball-contacts for the external power supply. Only hp-41x such module could be installed. To execute a program in extended memory it must first be copied to regular internal memory. Also, HP provided a respectable number of software packages as well as ROM modules with pre-programmed solutions.

Register memory shared with program memory. One blank overlay, one standard functions overlay both plastic. Delivers highly accurate results! One sheet of sticky labels for overlays, completely new. The “flying goose” and the “backwards flying goose”.


Magnetic program card holder with 38 unmarked magnetic cards and one red card used to clean the magnetic head of the card reader. Both reader and manual in excellent condition. B, Septemberprinted in Singapore. All keys could be re-assigned to user-defined commands. German, pages, 1st issue, Did not put mwnual the label which covers the screws.

For plain string input do not use XEQ. The HPA “X-memory” module increased the extended memory space by registers bytes. Data inside extended memory is organized in files which can store programs or data. The graphics display of some of the Pioneer models is much better in this respect. Various hp-441cx on “synthetic programming”. Additional 75 Magnetic Cards. White keyboard overlay with normal manuzl codes. The remaining registers can be used for program code.


Specifies the amount of number registers nnn to allocate. It is also one of the first calculators with support for alphanumeric strings – but in my opinion this makes the display hard to read. Excellent condition, fully functional.

One with standard key symbols, one with no labels. 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.

A picture of the serial interface connector. Cardboard box with 6 rolls of paper for the A or A printer. The HPA quad memory module added registers giving a total of registers.

This code-exchangability created a huge base of programs. Note manuwl two extension port covers have been marked with a black pen hardly noticable.

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

Magnetic program card holder with 39 unmarked magnetic cards. One register can hold up to 7 program steps 7 bytes. This time I didn’t install a little spring which obstructed the card slot – now it works!!