1 jan 2400 ano antes da era comum - Abacus Invented
Descrição:
1. As far as we know, this was the first calculating device ever.
2. Predating Pascal by a few millenia, it shows that even early civilizations were inventing tools to help them do their accounting.
3. Still used today, though they're becoming increasingly obsolete with pocket calculators becoming more accessible
Adicionado na linha do tempo:
Data:
1 jan 2400 ano antes da era comum
Agora
~ 4427 years ago