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Abacus guide book ABACUS GUIDE BOOK http www tux org bagleyd AbacusGB html ABACUS Small and Handy but a remarkably e ?cient Chinese Calculator The Abacus a sort of rectangular board with many beads -- somewhat similar to what children use at primary schoo

ABACUS GUIDE BOOK http www tux org bagleyd AbacusGB html ABACUS Small and Handy but a remarkably e ?cient Chinese Calculator The Abacus a sort of rectangular board with many beads -- somewhat similar to what children use at primary school to learn counting Similar calculators exist in several other countries including Russia as well as Japan but with di ?erentiating variations of PM CABACUS GUIDE BOOK There is no doubt that it is one of the most prominent articles of business equipment in Chinese business o ?ces today There is not a home or o ?ce in Taiwan where an Abacus is not found Its use is compulsory in all primary and business schools Of late many a foreigner is becoming interested in the use of the Abacus in a increased number Wherever a Chinese goes be it New York London Bombay Sidney or Buenos Aires the Abacus goes with him Chinese government o ?cials bankers ?nanciers o ?ce clerks junk dealers and house wives depend largely upon it for their counting in the same manner as a child depends on his mother A Chinese is so dependent on the Abacus that he ?nds it awkward to make even simple calculations without one Naturally a great many expressions utilizing the name of Abacus has developed out of this national habit Today there are more than di ?erent models of the Chinese Abacus varied in size and quality of the materials used but only one type made of brass mounting on a marble base is the best This Chinese dependence on the Abacus is under standable in the light of what this simple gadget can accomplish in the e ?cient calculations from the simplest to the most complex mathematical problems of addition subtraction multiplication and division of http www tux org bagleyd AbacusGB html PM CABACUS GUIDE BOOK More brie y explained the Abacus is an instrument to augment mental arithmetic The mechanics of its use is simple and its accuracy is assured by repetition and practice alone Many speed and accuracy contests have been staged between the Abacus and Calculating Machines The small insigni ?cant and inexpensive Abacus has usually been the victor It must be understood however that while the Abacus outshines its mechanical brother in addition and subtraction it faces some disadvantages in multiplication and division problems INTRODUCTION TO ABACUS Unit points on the crosspiece are usually placed one every ?fth upright Unit points are use to indicate ones thousands millions billions and so on How to manipulate your ?ngers of http www tux org bagleyd AbacusGB html PM CABACUS GUIDE BOOK In pushing the counters there are three ways Use only the fore ?nger Using the thumb and fore ?nger Using the thumb fore ?nger and middle ?nger The third one is the method with the thumb Of these three ways the second one using the thumb and fore ?nger is recommended it being the best and easiest Thumb used to Put in counters in the