The Japanese Abacus (Soroban)
The Japanese took the Chinese Abacus and made some revisions. The new Japanese Abacus called a Soroban was invented in 1850. There is a global community that prefers the use of the Soroban over the traditional Chinese Abacus.
Buy a Japanese Abacus at our mini Soroban Store
Japan Math.com’s quick guide to the Soroban
How to Make Your Own Soroban Tutorial