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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The remaining registers can be used for program code. This code-exchangability created a huge base of programs. Front and back close to mint, a few scratches on the sides.

Cardboard hp441cx with 6 rolls of paper for the A or A printer. Within a program local labelsA – J and a – j can be used. Refer to the table on the back of the calculator for special keys ie.

Infrared module HPA, serial number The following files are available on the Systemyde website: Register memory shared with program memory.


To execute a program in extended memory it must first be copied to regular internal memory. Specifies the amount of number registers nnn to allocate.

Older units will be completely reset, newer units perform a “soft reset”. Especially the possibility to access ROM code made it the preferred toy for “hackers”. One with standard key symbols, one with no labels. Memory space is shared between programs and data storage, allocation is performed using the SIZE command.

HP -41CX Quick Reference Manual

Labels and mutli-character string labels. The “flying goose” and the “backwards flying goose”. A very popular calculator. Magnetic program card holder with 38 unmarked magnetic cards and one red card used to clean the magnetic head of the card reader.

These local labels are not visible outside of the current global program. A calculator with cult status. Excellent condition, fully functional.

Apparently, only two such modules could be installed. Only one such module could be installed.


Solved: HPCX manuals – HP Support Community –

White keyboard overlay with normal manua codes. Original HPC cardboard box in good condition. Data inside extended memory is organized in files which can store programs or data. The HPA “X-memory” module increased the extended memory space by registers bytes. Note that the printer A can power the HP About 70 magnetic cards for the magnetic card reader.

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

The HPA quad memory module added registers giving a total of registers. Magnetic program card holder with 39 unmarked magnetic cards. Manua sheet of sticky labels for overlays, completely new. Both reader and manual in excellent condition. Replaced the rubber wheel – now it doesn’t work any more at all!

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