The first Abacus (plural Abaci) are believed to have come from Mesopotamia circa 2700 BC.the Chinese abacus, called a suànpándates to around the 2nd cenruary BC and is beleived to be a copy of the Roman abacus from around the 1st centuary BC.The Roman one was thought to be a stolen, and improved Persian abacus and the Persians believe to have copied the Egyptian one.
How did the abacus occur?
the abacus replaced the abaci
If you mean electronically, then it would still be called a calculator. But, before that, people used the abacus, which had lots of sliding thingies and such.
i am used to count some call this a manual calculator it's also called abacus
Infinity
It is called an Abacus
The real name of abacus is sorabain and it is also called logorthum
Abacus.
Gintaara.
abacus
its called the abacus
the inventer to the abacus is unknown but all that i know so far is that its was invented in babylonia and was made with wood when first invented
The abacus, also called a counting frame, is a calculating tool used primarily in parts of Asia for performing arithmetic processes
The china had one with rows wooden round balls on wires, 3 rows of them, 3 balls & 3 balls =6 in the last row, that was add, to subtract it was to the left cool
Abacus
China invented the abacus .