16 ore 46 min, 25 feb 4 anni a. C. - Use of counters to aid calculations: 3rd - 6th century B.C
Descrizione:
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.
Aggiunto al nastro di tempo:
Data:
16 ore 46 min, 25 feb 4 anni a. C.
Adesso
~ 2029 years ago
