Five hundred eighty-three calculators, 128 brands and one man who has painstakingly cataloged them all. Emil Dudek, a technology enthusiast who lives in South Wales, U.K., has spent the last eight ...

There are a few very rare and very expensive calculators with Nixie tube displays scattered about calculator history, but so far we haven’t seen someone build a truly useful Nixie calculator from ...

There’s something about Reverse Polish Notation (RPN) and the calculators that use it. It calls to mind a time when a calculator was a serious tool, and not just a throwaway toy. Created in the legacy ...

Everyone learns in grade school that you can’t divide by zero, but few of us ever learn (or fully understand) why. The stock answer is that it gives you an answer of infinity. The truth is a bit more ...

What you see above is not a calculator. Or rather, it’s not the calculator you think it is. Rather, it is the latest software-only implementation of the classic Hewlett Packard scientific calculator, ...

For a brief time in the 1970s, the calculator represented the height of office design chic. Desktop calculators came in pops of primary colors or encased in wood paneling. They were expensive. Elite.

Sharp was a frontrunner among the many companies that began developing calculators throughout the 1960s and 1970s. Until 1970, Sharp was only the trade name of the Hayakawa Electric Industry Company; ...

Iofree has created a new retro mechanical calculator called the Digit which it has launched via Kickstarter this week and already blasted past its required pledge goal thanks to over 450 backers with ...