abacus(算盘）的发明过程,谁知道,最好用中英文都有的.

关于算盘的来历,最早可以追溯到公元前600年,据说我国当时就有了"算板"。古人把10个算珠串成一组,一组组排列好,放入框内,然后迅速拨动算珠进行计算。东汉末年,徐岳在《数术记遗》中记载,他的老师刘洪访问隐士天目先生时,天目先生解释了14种计算方法,其中一种就是珠算,采用的计算工具很接近现代的算盘。这种算盘每位有5颗可动的算珠,上面1颗相当于5,下面4颗每颗当作1。As to the origins of Abacus,it can date back to 600 BC。China was said to have a "balance sheet。" The ancients considered the 10 bead into a group,one set arranged well into the box,and then quickly toggle count beads calculated。Eastern Han Dynasty,Xu Yue in the "surgery in mind a few left," recorded in his visit to a hermit days head teacher,Mr。Liu,the days,Mr。Head explained the 14 kinds of calculations,one of which is the abacus,using the computational tools is very close to modern calculations 。This abacus has 5 each movable operator beads,an equivalent of 5 above,the following four stars as one of each。