1 dez 2401 ano antes da era comum - First evidence of computation:The abacus
Descrição:
 The abacus was first know recorded form of an "automatic computer" and was believed to have been made in Babylon.The abacus generally features a table or tablet with beaded
strings. It was in use in china and japan until 1990 then it was replaced by calculators. 
Adicionado na linha do tempo:
Data:
1 dez 2401 ano antes da era comum
Agora
 ~ 4430 years ago