Explore the incredible restoration of a forgotten Arithmometer, a fully mechanical calculator capable of adding, multiplying, and dividing, brought back to life with precision! The restoration ...

It couldn’t multiply or divide. He then went into the arithmometer, which is arguably the first commercially successful mechanical calculator with four functions. That was around 1821 or so.

Charles Xavier Thomas de Colmar was a French inventor and entrepreneur renowned for developing, patenting, and manufacturing the Arithmometer. The Arithmometer was the first commercially ...

It couldn’t multiply or divide. He then went into the arithmometer, which is arguably the first commercially successful mechanical calculator with four functions. That was around 1821 or so.