Vintage Calculators

When my trusty HP-42S calculator began having troubles, I set out to find a replacement and was surprised to find that HP no longer made a comparable RPN calculator. Fortunately, a colleague gave me his retired HP-19C and HP-41CX, both of which needed only minor repairs. I soon discovered that there was an active used HP calculator market, and I casually started collecting them. I eventually found the calculator I’d always wanted, an HP-67 programmable, which I use almost daily.

hp-34c-led-calculator

My Calculator Collection

Calculator Articles

Programmable Calculator Software