Antique Chinese Abacus Adding Calculator Wood Brass 13 Rows 91 Bead Lotus-Flower
USD 19.99 USD
Specifications
| Country Of Origin | China |
| Culture | Chinese |
| Handmade | Yes |
In the ancient world, abacuses were a practical calculating tool. An abacus (pl. In their earliest designs, the beads could be loose on a flat surface or sliding in grooves. Roman and East Asian abacuses use a system resembling bi-quinary coded decimal, with a top deck (containing one or two beads) representing fives and a bottom deck (containing four or five beads) representing ones. ).
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