Abacus History and Use

May 14th, 2015
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The abacus, often called the earliest calculating machine in the world, has a long history. The earliest mention of the abacus can be dated back to the Eastern Han Dynasty, where it was mentioned in a book by Xu Yue in about 190 A.D, There was a time when numbers were not written.

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Abacus History and UseThe abacus, often called the earliest calculating machine in the world, has a long history. The earliest mention of the abacus can be dated back to the Eastern Han Dynasty, where it was mentioned in a book by Xu Yue in about 190 A.D, There was a time when numbers were not

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