They have been made of various materials over the years, including wood and metal.
the first abacuss ever made in the world is in china in bajing about 40,000 years ago.
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.
the history about the abacus is that 3000 years ago the chinese invented the abacus. The abacus was made of wood parrelel rod and beads.
It was made in 1815
For a calculater
Originally in China.
I think what you are asking is an abacus. Some people say that the Abacus was invented before any other counting device so many thousands or years ago that the inventor is not known
The abacus first appeared around the period 2700-2300 BC in Sumeria.
The Chinese abacus.
actient china
actient china