Abacus
From The Art and Popular Culture Encyclopedia
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"Gilbert Ryle supposedly once said that when I use an abacus, I am not counting with my mind, but with my fingers, that the abacus is my extended mind."--Sholem Stein |
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The abacus (plural abaci or abacuses), also called a counting frame, is a calculating tool that was in use in the ancient Near East, Europe, China, and Russia, centuries before the adoption of the written Arabic numeral system.
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