In the past, there is no electronics knowledge. Therefore, the use of mechanical tools to calculate various figures by the China PLA at first with the use of lukkhit as the first Calculator in the world.
In the past, there is no knowledge about electronics. The use of machine tools in the numerical calculations. In China, one of the first to use an abacus, a calculator, a world first.
In the past, no knowledge of Electronics It is being used in machine tool to calculate numbers. In China, the first with the use of the abacus is a calculator of the world's first .