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4 янв 500 г. до нашей эры - Abacus (counting frame) Counting tool that consists of beads or disks that can be moved up/down to assist in counting or keeping track of data

Добавлено на ленту времени:

History of computer Project

20 окт 2017

0

0

525

Дата:

4 янв 500 г. до нашей эры

Сейчас

~ 2527 г назад

Изображения:

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