The abacus (plural abaci or abacuses), also called a counting - TopicsExpress



          

The abacus (plural abaci or abacuses), also called a counting frame, is a calculating tool that was in use centuries before the adoption of the written modern numeral system and is still widely used by merchants, traders and clerks in Asia, Africa, and elsewhere. Around the 5th century, Indian clerks were already finding new ways of recording the contents of the Abacus.[29] Hindu texts used the term śhūnya (zero) to indicate the empty column on the abacus.
Posted on: Mon, 05 Jan 2015 23:45:46 +0000

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