Category: Calculators

In this category I will talk about very special calculators

HP Program Pascals Triangle

HP program for pascal's triangle printout

HP program for Pascals Triangle Just recently I had to help my daughter with some algebra homework and I remembered the Pascal’s Triangle in order to calculate the binomial coefficients. I wanted to write a small HP program on my HP28S to come up with a fast solution. I am not explaining the program at …

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HP82240A Infrared Thermal Printer

Self-test print out

HP82240A infrared thermal printer or HP28S printer For the HP calculator enthusiasts out there, I have a great enhancing tool to add to this amazing bit of original technology…it’s the HP infrared thermal printer. Now, some of you not familiar with this add-on might ask why? Why would you ever need to print from a …

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Replacement of the HP15C

Replacement of the HP15C Are you looking for a replacement of the Hewlett-Packard HP15C calculator?Then look no further,  check out the following replacement I found, its the DM15L from swissmicros I had the HP15C for years and I can not find it, I searched everywhere. So after looking at eBay, Amazon and so on with …

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Permanent link to this article: https://www.teawea.com/replacement-of-the-hp15c/

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