HP
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The Accidental Discovery of the HP28C
Some time ago I scored an HP28S on ebay for old times sake. I had one of those when I was in my 4th year in middle/high school and liked it a lot. It was more convenient to use than the HP15C I had before it, mainly because of the display that shows 4 entries…
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HP38G: Another addition to the calculator collection
I was recently surfing on eBay for an HP calculator and ended up buying 2. One is this HP38G. I didn’t do my research properly of course and only realised after it arrived that this is a traditional style calculator, not the typical HP RPN type I am used to. Apart from that it looks…
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HP48G: A New Addition to the Calculator Collection
A while ago I was browsing Ebay and came across a second hand HP48G which looked quite nice. Price was OK so I decided to buy it. It travelled quite a while coming from the US but it was in working order. The included batteries were apparently old because they died after a month or…
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HP-28S Advanced Scientific Calculator
Very long ago, when I was in high school I got my first hp calculator from my dad: a HP-15C. He gave it to me because I had issues with brackets on a standard calculator and with RPN you don’t need brackets. I believe this was in third grade. When things got a bit more…
