abacus was used in 300 B.C by the Babylonians. (The oldest) always the oldest from long time ago.
The Chinese 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 is made by the Egyptian in Egypt.
The abacus has been around for millennia, in various countries. No record of the inventor was made.
actient china
actient china
The answer is China.
The abacus first appeared around the period 2700-2300 BC in Sumeria.
abacus was used in 300 B.C by the Babylonians. (The oldest) always the oldest from long time ago.
The Chinese are probably the first , but the Romans made them maybe 100 years later.
The Chinese abacus
abacus Casio made the first graphing calculator in 1985.
The Ancient Chinese made the first means for counting with 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 is made by the Egyptian in Egypt.
keyboard,usb,CPU, and you ! ")