The first calculating device which on the principle of place value nalation
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Abacus
Another form, common today, has the counters strung on wires.
The earliest kno calculating device is probably the Abacus.
It dates back at least to 1100bce....
The Abacus generally in the form of a large cacluating board, was in univarsal use in Europe in the Middle ages, as well as in the Arab world and in Asia
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