The abacus is a computing device on which arithmetic calculations are performed by sliding counters (beads, pebbles, or flat discs) along rods, wires or lines. The instrument may have originated in ...

and calligraphy. A high-profile school combines soroban with information technology so students can learn mental arithmetic on tablet devices. An educational app called Soro Touch shows abacus ...

The Zhusuan, otherwise known as the Chinese abacus was officially listed as an intangible cultural heritage at the 8th Annual UNESCO World Heritage Congress on December 4th in Baku, Azerbaijan.