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12 июн 2400 г. до нашей эры - Abacus was invented by the Babylon.

Описание:

It is the earliest known tool of computing.

Добавлено на ленту времени:

CP timeline - Tiana Zhao

ByTiana Zhao
30 янв 2018

Дата:

12 июн 2400 г. до нашей эры
Сейчас
~ 4427 г назад
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