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abacus

🧮
  • Pixiv
  • Twitter
  • Bluesky
  • Weibo
  • Lofter
  • Tumblr
そろばん
  • Pixiv
  • Twitter
  • Bluesky
  • Weibo
  • Lofter
  • Tumblr
アバカス
  • Pixiv
  • Twitter
  • Bluesky
  • Weibo
  • Lofter
  • Tumblr

Ancient manual calculation device still used in East Asia today. Japanese term is soroban (そろばん).

For more info:

  • Wikipedia, Abacus article
  • Wikipedia, separate article for the Japanese abacus

See also

  • calculator
  • holding abacus

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