Egyptian abacus (14 ч 39 мин, 21 ноя 2018 г. – 14 ч 49 мин, 1 июл 2019 г.)
Описание:
The use of the abacus in ancient Egypt is mentioned by the Greek historian Herodotus, who writes that the manner of its usage by the Egyptians was opposite in direction when compared with the Greek method.
Добавлено на ленту времени:
Дата:
14 ч 39 мин, 21 ноя 2018 г.
14 ч 49 мин, 1 июл 2019 г.
~ 7 months