why Abacus is called manual calculating machine?
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0
Answer:
Later the beads were made to slide on rods of some sort built into a frame, allowing faster manipulation. Abacuses are still made, often as a bamboo frame with beads sliding on wires.
Answered by
1
Answer:
because abacus is made manually by moving the beads by hands itself there is no machines to make abacus.
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