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Offers information on flight sim software and computer books. ... Pioneers in personal computers. Delivering quality products to millions since 1978. "You can count on Abacus"; ... Abacus - Delivering Quality Products Since 1978...
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www.abacuspub.com/
www.abacuspub.com/
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Abacus - Wikipedia, the free encyclopedia
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The abacus , also called a counting frame , is a calculating tool used primarily in parts of Asia for performing arithmetic processes. Today, abacuses are often constructed as a bamboo frame with ...
en.wikipedia.org/wiki/Abacus
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Abacus and Its Relatives: an introduction, a little history and clasification ... Abacus is probably the first of calculating devices. Encyclopædia Britannica traces the word abacus to the Phoenician abak (sand). American Heritage Dictionary points to the Greek word abax, which might have originated from Hebrew avak (dust).
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www.cut-the-knot.org/blue/Abacus.shtml
www.cut-the-knot.org/blue/Abacus.shtml
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Interactive Abacus Tutor ... The Lee Abacus ... The Abacus as Art...
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www.ee.ryerson.ca/~elf/abacus/
www.ee.ryerson.ca/~elf/abacus/
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Why does the abacus exist? ... The difference between a counting board and an abacus ... Both the abacus and the counting board are mechanical aids used for counting; they are not calculators in the sense we use the word today. The person operating the abacus performs calculations in their head and uses the abacus as a...
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www.ee.ryerson.ca/~elf/abacus/history.html
www.ee.ryerson.ca/~elf/abacus/history.html
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What is an abacus? An abacus is a device used for addition and subtraction, and the related operations of multiplication and division. It does not require the use of pen and paper, and it's good for any base number system. ... Timeline of the Abacus...
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fenris.net/~lizyoung/abacus.html
fenris.net/~lizyoung/abacus.html
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Fascinating facts about the invention of the Abacus by the Chinese in 3000 BC. ... AT A GLANCE: The Chinese abacus was developed about 5000 years ago. It was built out of wood and beads. It could be held and carried around easily. The abacus was so successful that its use spread form China to many other countries.
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www.ideafinder.com/history/inventions/abacus.htm
www.ideafinder.com/history/inventions/abacus.htm
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[ăb́ə-kəs, ə-băḱəs]
