26 feb 2400 anni a. C. - Abacus
Descrizione:
It was invented by the babylonians and is made up of rows of beaded strings n stuff. It's important because it's been helping folks calculate stuff since 2400 BCE. Nowadays it's commonly used in doctor's offices to stop folks from getting bored
Aggiunto al nastro di tempo:
Data:
26 feb 2400 anni a. C.
Adesso
~ 4427 years ago