The only reason I don't use my HP-15c scientific, which I got in college well before the turn of the century as an EE undergrad, is because it has been emulated

The only reason I don't use my HP-15c scientific, which I got in college well before the turn of the century as an EE undergrad, is because it has been emulated on my phone. Well worth the price: https://apps.apple.com/us/app/hp-15c-calculator/id503720774 https://apps.apple.com/us/app/hp-15c-calculator/id503720774 And oh, BTW, I still have my 15c.