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abacus

๐Ÿงฎ
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ใใ‚ใฐใ‚“
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็ฎ—็›ค
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็ฎ—็›˜
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ใ‚ขใƒใ‚ซใ‚น
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Ancient manual calculation device still used in East Asia today.

See also

  • calculator
  • holding abacus

External links

  • Wikipedia: Abacus
  • Wikipedia: Soroban
  • Wikipedia: Suanpan

Posts

post #12395176
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post #12161663
post #11906297
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post #11771861
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post #11469277
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