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An abacus is a counting frame. Abacus may also refer to: * Mental abacus, mental calculation method inspired by the abacus * Logical abacus, an early mechanical digital computer * Abacus (architecture), a flat slab forming the uppermost member or division of the capital of a column * Abacus Harmonicus, an ancient diagram showing the structure and placement of the keys of a particular musical instrument * as (part of) a proper name * * Abacus (GDS), a global distribution system used in travel * * ''Abacus'' (journal), a peer-reviewed academic journal * * Abacus, an imprint of Little, Brown and Company * * Abacus, a Zagat-rated restaurant in Dallas, Texas, owned by chef Kent Rathbun * * Abacus Software, a producer of payware add-ons for Microsoft Flight Simulator * * Abacus 5, an action sports manufacturing and distribution company headquartered in Shanghai * * Abacus Records, an imprint of Century Media Records * * Abacus school, a type of Renaissance-era Italian trade school * * Abacus Federal Savings Bank, an overseas Chinese bank in the United States * * Abacus-2007AC1, a financial instrument and the subject of ''SEC v. Goldman Sachs, et al.'' (2010) * * Operation Abacus, the Canadian military operation to restore vital services if the year 2000 caused disruption * * Abacus–Australian Mutuals, the industry body representing the credit unions, building societies and mutual banks that constitute the Australian mutual or cooperative banking sector 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Abacus (disambiguation)」の詳細全文を読む スポンサード リンク
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