Calculator

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…

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…