Scholars of this camp also cite many other literary descriptions of the abaci as evidence. They cited the note of a Yuan Writer named Tao Zongyi, who portrayed in his book that “unlike the newly-bought servants, the experienced ones were just like abacus beads they wouldn’t move unless you poked them to.” The analogy demonstrated that the using of the abacus was probably very common at that time. On each rod, the classic Chinese abacus has 2 beads on the upper deck and 5 on the lower deck such an abacus is also referred to as a 2/5 abacus. The device was made of wood with metal re-inforcements. Then there came a second camp who believed that the abacus was invented in the middle period of the Yuan Dynasty (1206AD-1368AD) and became widely used in early Ming Dynasty (1368AD-1644AD). The abacus, called Suan-Pan in Chinese, as it appears today, was first chronicled circa 1200 C.E. But other scholars disapproved this assertion by classifying the mentioned tool as a gadget used only for addition and subtraction. The piece, which appeared in a 1981 issue of Mathematics in School, is easy to read and includes helpful pictures. In this book, Xu recorded fourteen ways of calculation, among which there was a description of a way of computation by moving beads within three beams. The Chinese Abacus is a short article that provides the history, use, and applications of the Chinese abacus. The Chinese abacus is a traditional calculation method with a long history, which uses the abacus as the tool to perform mathematical calculations by moving beads with the fingers. Their proof was the book A Gleaning of Arithmetic (Shu Shu Ji Yi) by the mathematician Xu Yue (?-220AD). Firstly, starting in the Qing Dynasty, a group of people advocated that there had been documents on abaci since the Han Dynasty (202BC-220AD).
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