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Abacus (disambiguation)

From Wikipedia, the free encyclopedia

An abacus is a counting frame.

Abacus may also refer to:

  • Abacus (architecture), a flat slab forming the uppermost member or division of the capital of a column
  • Abacus (journal), a peer-reviewed academic accounting journal
  • Abacus school, a type of Renaissance-era Italian trade school
  • Logical abacus, an early mechanical digital computer
  • Mental abacus, a system involving visualization of an abacus to carry out arithmetical calculations
  • Abacus Harmonicus, an ancient diagram showing the structure and placement of the keys of a particular musical instrument
  • Operation Abacus, the Canadian military operation to restore vital services if the year 2000 caused disruption

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