Remove the outer casing on the Monroe PC-1421, a 1964 mechanical calculator, and this is what you’ll find. Courtesy of Kevin Twomey Mark Glusker had heard rumors about the mechanical calculator, a ...

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 ...

I was just in an email ‘conversation’ with someone when I mentioned my Curta mechanical calculator, and he responded “Pictures Please!” so here we are… Just in case you haven’t heard about this before ...

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 ...

If you’re into mechanical devices or Fourier series (or both!), you’ve got some serious YouTubing to do. In Synthesis, [The Engineer Guy] explains how the machine creates an arbitrary waveform from ...

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 ...

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 ...

In 1642, a teenage French scholar named Blaise Pascal invented what many regard as the world’s first mechanical calculator: the Pascaline. Almost four centuries later, one of these famous instruments ...

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 ...

Watch as a frustrating math problem inspires a creative journey from paper to precision engineering. See how a simple multiplication error sparks the design of a mechanical DIY calculator, beautifully ...

Look, we know that the Curta Calculator is old. 1948 old in fact, after it was first conceived by Curt Herzstark while imprisoned in the Buchenwald concentration camp. Still, why not introduce the ...