Abacus: Saun-paun: The History and use of the Chinese abacus

The word Abacus is derived from the Greek Abax meaning counting board and the straight types of Abacus were stone slates with dust covering them and a stylus kick in for marking numbers. Later this evolved into a slate with groves where rocks or divers(prenominal) counters would be placed to mark numbers. Later it finally evolved into a framed device with drop-offs sliding along bamboo rods. The abacus is sen beatnt to have appeared during circa 1200 A.D. in China; in Chinese, it is called the suan-pan. The classic Chinese abacus has two types of off-whites on the abacus, those in the lower gild, below the separator beam, and those in the velocity clothe above it. The ones in the lower clothe are sometimes called earth beads, and draw out a value of 1 in their column. The ones in the upper ornament are sometimes called heaven beads. Such an abacus is likewise referred to as a 2/5 style abacus. The 2/5 style survived unchanged until virtually 1850 at which time the 1 /5 one bead on the carrousel deck and five beads on the bottom deck abacus appeared. The abacus bath be used to ADD, SUBTRACT, MULTIPLY, and DIVIDE as advantageously as work with sophisticated mathematical problems such as fractions and second power root.

In Asian countries it is non unusual to see shopkeepers and highway vendors using an abacus to calculate problems, especially where electricity is not convenient. about elderly residents actually prefer the abacus over newer electronic devices. The calculations do on an abacus are immediate, with the device retaining the results which the user can see. not only that some equation such as assenting or subtrac! tion are actually faster than convention calculators. In Asia parents still send their children to private tutors to learn bead arithmetic as a learning aid and... If you wishing to get a full essay, order it on our website: OrderCustomPaper.com

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