Start by tinning all the conacts on the keyboard and CPU board using a fine-tipped soldering iron. Bound printout from the pages at hp Ratings hpcx Reviews Write a review. Unfortunately, my cleaning efforts made things even worse not visible on the picture. Note that two extension port covers have been marked with a black pen hardly noticable. Reinstall the vil pack and turn it on.
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Primary keyboard function Gold keybox. Shifted keyboard function. Press and release the shift key [M first. These can be on the Normal or Alpha keyboard. Blue keybox. Nonkeyboard function. For Alpha execution: use followed by the Alpha name spelled out on the Alpha keyboard. For User-key execution: assign the function to the User keyboard.
ABC Blue letters. Alpha characters. Shifted Alpha characters. Black letters in keyboxes. These are special functions, not Alpha characters, and are ao- tive only in special circumstances. If it is a shifted function, it is preceded by ll 0 parameter The type of parameter required for a function. The numbers of the sections and the parts also continue in sequence from volume 1.
Look there for a brief overview of the two volumes. This volume volume 2 emphasizes completeness of information and reference information. All the appendices are in this volume, as is an index to all the functions inside the back cover and a comprehensive summary of all the functions in the Function Tables the blue-edged pages in front of the Subject Index.
HP -41CV Owner's Handbook Manual
A calculator with cult status. Especially the possibility to access ROM code made it the preferred toy for "hackers". A unique feature was the barcode reader "wand" that allowed to read in programs that were printed on paper in the form of barcodes. This code-exchangability created a huge base of programs. Also, HP provided a respectable number of software packages as well as ROM modules with pre-programmed solutions. 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 graphics display of some of the Pioneer models is much better in this respect.
HP-41CX Owner's Manual Vol 2.pdf
Hewlett Packard HP-41C/CV/CX/CL