Welcome to ...

The place where the world comes together in honesty and mirth.
Windmills Tilted, Scared Cows Butchered, Lies Skewered on the Lance of Reality ... or something to that effect.


Wednesday, February 11, 2015

The Arithmographe

An Early Example Of A Portable Calculator
More than three centuries ago, the Parisian physician and polymath Claude Perrault devised a fascinating small mechanic calculator, Abaque Rhabdologique. Subsequently, many mathematicians and inventors have improved, and re-shaped, Perrault's ingenius machine.
As an heir of this tradition, Troncet created what he called the Arithmographe. Essentially, it is a small stylus-driven metal calculator consisting of flat metal bands with notched edges pointing at numbers from one to nine.

No comments: