16 h 46 m, 25 feb 4 año aC - Use of counters to aid calculations: 3rd - 6th century B.C
Descripción:
Requirement of simple calculations were done in innovative ways with stones, pebbles and theyeven used bones. These were called counters. We can find many versions of the abacus now with
more complicated calculation abilities. Counting on fingers and abacus models were used.
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16 h 46 m, 25 feb 4 año aC
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~ 2029 years ago
