Napier's Bones (30 janv. 1617 – 31 déc. 1617)
Description:
Napier's Bones was invented by Scottish mathematician, John Napier. This is a computation device that has the multiplication table written on a series of rods. To make calculations, the user would have to change the vertical position of the rods.Ajouté au bande de temps:
Date:
30 janv. 1617
31 déc. 1617
~ 11 months