soroban
Sign in to save350px|thumb|A modern soroban. The right side of the soroban represents the number 1234567890, each column indicating one digit, with the lower beads representing "ones" and the upper beads "fives".
~13 min read
Encyclopedic overview
12 sectionsContents
- Construction
- Usage
- Representation of numbers
- Methods of operation
- {{anchor|Sorokaru}}Modern use
- Brief history
- Comparison with the electric calculator
- See also
- Notes
- Footnotes
- References
- External links
350px|thumb|A modern soroban. The right side of the soroban represents the number 1234567890, each column indicating one digit, with the lower beads representing "ones" and the upper beads "fives".
The is an abacus developed in Japan. It is derived from the ancient Chinese suanpan, imported to Japan in the 14th century. Like the suanpan, the soroban is still used today, despite the proliferation of practical and affordable pocket electronic calculators.
Excerpted from Wikipedia’s “soroban” article, available under the CC BY-SA 4.0 licence.