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 ...

It's not just us that can freak out when we can't solve a complex maths problem. The answer to 'what is one divided by zero?' causes old-fashioned calculators to have a mechanical meltdown. A video ...

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 ...

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 ...

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.

It was 1985 when Guy Ball saw his first old calculator at a Salvation Army. “It was really cool-looking and had this white plastic sculpted body. The numbers lit up in a pretty blue fluorescent tone.

[Amen]’s Rockwell 920 calculator from the 70s was a very impressive piece of hardware for its time. It sported a 16-digit display, a printer, and it could run programs. It even had a magnetic card ...

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; ...