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 ...

“The first digital use of the transistor for consumers was in a calculator,” says Rick Bensene, curator of the Old Calculator Web Museum. Our series on the birth of the transistor — and with it, the ...

Before the electronic calculator, there was the mechanical calculator, a heavy device often about the size of a small computer that cost thousands in today’s dollars. They were indispensable tools ...

Earlier this year, [Dan Maloney] went inside mechanical calculators. Being the practical sort, [Dan] jumped right into the Pascaline invented by Blaise Pascal. It couldn’t multiply or divide. He then ...

This chaos of churning gears comes down to a fairly simple explanation. Division is just a series of sequential subtraction, and division by zero is the sequential subtraction of zero, over and over ...

Discover how to create your very own multiplication table and keep it handy with easy steps! Learn about the fascinating history and evolution of mechanical calculators, including the gear-based ...

From early on in math class, you’re taught that you cannot divide a number by zero. On paper, it doesn’t work out. Do it electronically, and you’ll get an error ...

Lofree has created a new mechanical wireless number pad and calculator in the form of the Digit which has been inspired by retro design and is equipped with mechanical keys. Watch the demonstration ...