Soroban
The soroban (算盤, そろばん; counting tray) is an abacus developed in Japan. It is derived from the ancient Chinese suanpan, imported to Japan in the 14th century.
The soroban (算盤, そろばん; counting tray) is an abacus developed in Japan. It is derived from the ancient Chinese suanpan, imported to Japan in the 14th century.
The soroban (算盤, そろばん; counting tray) is an abacus developed in Japan. It is derived from the ancient Chinese suanpan, imported to Japan in the 14th century.
Source: Wikipedia "Soroban" · CC BY-SA 4.0
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