Good article. I, too, am fascinated by calculators and how they work, especially the HP scientific RPN calculators. So much so, that I ended up developing this:

Good article. I, too, am fascinated by calculators and how they work, especially the HP scientific RPN calculators. So much so, that I ended up developing this: https://play.google.com/store/apps/details?id=com.limpidfox.hp67_2&hl=en_US&pli=1 https://play.google.com/store/apps/details?id=com.limpidfox....