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Abacus - Wikipedia, the free encyclopedia
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It cannot be proven, but the Chinese are often credited with the invention of the abacus. The abacus was a great invention in ancient China and has been called by some Western writers "the earliest calculating machine in the world." The abacus has a long history behind it.
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The invention of the abacus evolved from a simple need to count numbers. Merchants trading goods not only needed a way to count goods bought and sold, but also to quickly calculate the cost of multiples of those goods.
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Abacus | World of Invention. Abacus summary with 1 pages of encyclopedia entries, research information, and more. ... Although the exact time of its discovery is not truly known, the abacus is believed to have originated in the Middle East (in the region of modern-day Iraq) around 3000 B.C. Later, the abacus was used by...
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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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Abacus, Russia and Japan, Medieval ... An abacus is an ancient tool used for counting, consisting of a framed set with rods on which balls or beads are moved. The abacus has been in existence in China since the second century BCE, although the oldest counting boards have been found in fourth century BCE Rome.
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ABACUS is the earliest calculating machine in the world ... The abacus was a great invention in ancient China and has been called by some Western writers "the earliest calculating machine in the world."
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