Soroban, Japanese, 1975-1978.
3 3 c m
actual image size: 32cm x 25cm

Soroban, Japanese, 1975-1978.

Richardson, Claire

© Science Museum / Science & Society Picture Library


A Japanese abacus with coloured plastic beads in a cardboard case. The soroban has 1 bead above the bar and 4 beads below. It is used for calculations in base 10. The soroban was developed from the Chinese abacus which had 2 beads above the bar and 5 below for working in base 16.



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