Japanese Abacus (1 janv. 1400 – 14 h 49 min, 1 juill. 2019 ans)
Description:
The Japanese Abacus can also be called a soroban. It is conceived from the ancient Chinese suanpan, which was imported to Japan in the 14th century. It has 4 beads at the bottom and one at the top and the number of rods in a soroban is always odd and never fewer than nine.Ajouté au bande de temps:
Date:
1 janv. 1400
14 h 49 min, 1 juill. 2019 ans
~ 619 years