Who invented the suanpan abacus?

The suanpan, a traditional Chinese abacus, is believed to have been invented during the Han Dynasty (206 BCE – 220 CE). While the exact individual who created it is not documented, the design reflects advancements in counting technology of the time. The suanpan features a unique structure with beads arranged on rods that facilitate complex arithmetic operations, making it a vital tool in ancient Chinese commerce and mathematics.