Abacus abacus. Abacus abacus

Traditional chinese says that the sun was by hunter collecting from animal people began to what be what to。 This was the first course in invented more than two thousand years ago， the cc later do you today， most chinese learn how to use when they were young。 The structure of one is quite simple。 It is composed by bit， which represent numbers and wood。 Stick with算盘can be used to accomplish complete calculations quickly with simple formula than物算盘on the living puzzles of chinese mat mat discovery