The Arithmometer (1 gen 1820 anni – 31 dic 1820 anni)
Descrizione:
The arithmometer was invented by Thomas de Colmar. It was the first mechanical calculator. It used rotating drum to perform calculations. This device kicked off the start of the mechanical calculator industry.Aggiunto al nastro di tempo:
Data:
1 gen 1820 anni
31 dic 1820 anni
~ 12 months