An abacus could be considered an early ancestor to the calculator. It was made of wood and had wooden beads that slid on wires and were used to calculate arithmetic problems.
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They used Roman numerals and an abacus counting device
Thailand vegetable vendors use abacus, nowadays abacus is gaining popularity in India, US and taught by many schools
Around 2500BC the first Abacus appeared in Sumaria. It arrived in Persia about 600BC. The Greek Abacus is recorded to have been in use about 500BC
With an abacus.
yes