Never, the Abacus existed more than 5000 years before Babbage was born and Babbage never had any need for one.
An Abacus has beads and strings.
keyboard,usb,CPU, and you ! ")
ABACUS is a name of a calculating apparatus - it is not an acronym.
If you are refering to Chinese abacus their earliest rudimentary design of abacus has 1/4 rod beads (quite similar to the later Japanese soroban abacus). Various other types of abacus design were also seen afterwards, but the advance type of 2/5 rod beads became standard and classic. Afterwards, the basic 1/5 rod beads particularly became the type of basic design. The Roman abacus may be not connected to the Chinese abacus.
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.
The abacus first appeared around the period 2700-2300 BC in Sumeria.
The Chinese abacus.
actient china
actient china
The answer is China.
the chinese and they made the wheel barrow