Japanese Abacus (1 gen 1400 anni – 14 ore 49 min, 1 lugl 2019 anni)
Descrizione:
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.Aggiunto al nastro di tempo:
Data:
1 gen 1400 anni
14 ore 49 min, 1 lugl 2019 anni
~ 619 years
