abacus
The abacus (an abacus, abacus calculation) is a classic calculation aid, and there are various abacuses in the world.
A calculation with the abacus is called calculation on the abacus to calculate by moving a ball.
There are various opinions about the origin, but an opinion is influential in Babylonia origin opinion and the Chinese origin.
I pull a line to a picture of the sand in Mesopotamia, and there is the trace of "the sand abacus" which I put a stone there and calculated.
Similar thing was left in Greece, but put it on not only the sand but also the tops of the table in the Greece times.
This table is called "an abacus".
The ditch abacus which I made a ditch to a small board to have carrying around on Roman Empire period, and put a ball in the ditch was invented.
Even if this ditch abacus is handed down to China via the Middle East and became the current model, it is said.
The existing oldest abacus is a thing in about B.C. 300 with a thing called "an abacus of Salamis" discovered in Greek Salamis Island in 1846.
In addition, a ditch abacus called "Rome abacus" in the British Museum is stored.
There was an original calculation method to be called Hikaru who used a calculation method and the ancient calculator which I used the knot of the string for after B.C. in China.
I calculated these with a string and a stick of the bamboo and the stick of the tree, and there is the advantage to be able to gain figures in sequence, but it is not the form of the ball.
It is thought that it is about the second century that I became the form of the ball, and there are the words of "the calculation on the abacus" in a book of the second century to say .
There is the legend that military commander of three will, Seki feather assume the biological parent of the abacus, but it is still less legend things more than it that say to China from the front from the Age of Three Powers and Middle East / Rome that Seki feather invented it so that there is a trace of the trade.
But it is a legend known well in China, and the abacus of a picture and the carving is pictured in a wall and the pillar of the Seki Imperial mausoleum.
A calculation with the abacus is called calculation on the abacus to calculate by moving a ball.
There are various opinions about the origin, but an opinion is influential in Babylonia origin opinion and the Chinese origin.
I pull a line to a picture of the sand in Mesopotamia, and there is the trace of "the sand abacus" which I put a stone there and calculated.
Similar thing was left in Greece, but put it on not only the sand but also the tops of the table in the Greece times.
This table is called "an abacus".
The ditch abacus which I made a ditch to a small board to have carrying around on Roman Empire period, and put a ball in the ditch was invented.
Even if this ditch abacus is handed down to China via the Middle East and became the current model, it is said.
The existing oldest abacus is a thing in about B.C. 300 with a thing called "an abacus of Salamis" discovered in Greek Salamis Island in 1846.
In addition, a ditch abacus called "Rome abacus" in the British Museum is stored.
There was an original calculation method to be called Hikaru who used a calculation method and the ancient calculator which I used the knot of the string for after B.C. in China.
I calculated these with a string and a stick of the bamboo and the stick of the tree, and there is the advantage to be able to gain figures in sequence, but it is not the form of the ball.
It is thought that it is about the second century that I became the form of the ball, and there are the words of "the calculation on the abacus" in a book of the second century to say .
There is the legend that military commander of three will, Seki feather assume the biological parent of the abacus, but it is still less legend things more than it that say to China from the front from the Age of Three Powers and Middle East / Rome that Seki feather invented it so that there is a trace of the trade.
But it is a legend known well in China, and the abacus of a picture and the carving is pictured in a wall and the pillar of the Seki Imperial mausoleum.
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