Napier's Bones (30 янв 1617 г. – 31 дек 1617 г.)
Описание:
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.Добавлено на ленту времени:
Дата:
30 янв 1617 г.
31 дек 1617 г.
~ 11 months