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ID number:791160
Evaluation:
Published: 15.06.2004.
Language: English
Level: Secondary school
Literature: n/a
References: Not used
Extract

<Tab/><Tab/>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. As larger numbers become needed past the amount on a human hand, various natural goods become items in the counting process.
<Tab/>The history and evolution of the abacus is a long one and is often divided into three time periods including Ancient Times, Midd…

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