You will discover the Abacus Circuitry Puzzle for the first time ... the computing module’s movement is restricted, and you can only use the green-colored axis bases to move it.

Since the first abacus, the physical structure of abaci has changed, but the concept has survived almost five millennia and is still in use today. Counting devices continued to evolve over time ...

When it comes to fireworks, people will immediately think of holidays and festivals. Fireworks also mean wishing for peace ...

Parents in Japan often try to give their offspring a leg up by ensuring they learn early on how to use the abacus. While the sound of sliding beads making clacking sounds on a small wooden frame ...