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 ...

There was a brief period through the 1960s into the 1970s when the last word in electronics was the calculator. New models sold for hundreds of dollars, and owning one made you very special indeed.

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 ...

If you've ever spent time thumbing through back issues of magazines like Scientific American or New Scientist, you may have seen adverts for the Curta – a strange little device that resembles a pepper ...

Blaise Pascal is known for a number of things, but we remember him best for the Pascaline, an early mechanical calculator. [Chris Staecker] got a chance to take a close look at one, which is quite 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 ...