Napier's bones (1 janv. 1617 – 20 h 53 min, 30 juill. 2019 ans)
Description:
Napier's bones are a manually-operated calculating device created by John Napier of Merchiston, Scotland for calculation of products and quotients of numbers. With a method based on lattice calculating. The rods looked like bones which is why it was called Napier’s bonesAjouté au bande de temps:
Date:
1 janv. 1617
20 h 53 min, 30 juill. 2019 ans
~ 402 years