Japanese Abacus (1 Jan 1400 Jahr – 14 St. 49 Min, 1 Jul 2019 Jahr)
Beschreibung:
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.
Zugefügt zum Band der Zeit:
Counting/Caculating Inventions
Datum:
