Napier's bones (1 ene 1617 año – 20 h 53 m, 30 jul 2019 año)
Descripción:
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 bonesAñadido al timeline:
fecha:
1 ene 1617 año
20 h 53 m, 30 jul 2019 año
~ 402 years