CN2200198Y

CN2200198Y - Combined abacus

Info

Publication number: CN2200198Y
Application number: CN 94203915
Authority: CN
Inventors: 张瑞; 韩晶波; 韩春波
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-20
Filing date: 1994-02-20
Publication date: 1995-06-07
Anticipated expiration: 2004-02-20

Abstract

The utility model relates to a novel combined abacus, which is composed of a traditional abacus and an abacus which is newly added. The utility model is mainly characterized in that on each span of the traditional abacus, four beads with fixed numbers 6, 7, 8 and 9 are respectively added, and the four beads take part in calculation. The combined abacus does not only reserve the rule and algorithm of the traditional abacus, but also can carry one bit for one time when thirty is encountered and carry one bit for one time when twenty is encountered. In addition, the combined abacus can also carry one bit for one time when forty is encountered, which is controlled completely by personal calculation power. The utility model breaks a single decimal system of the traditional abacus and enhances calculation speed.

Description

Combined abacus

The utility model belongs to a kind of instrument of calculating number, a kind of specifically novel combination abacus.

Along with universal, the development of robot calculator and counter, the status of abacus does not still shake.The tool data is introduced, and Japanese government has all offered the rechoning by the abacus course in order to strengthen national calculating speed matter in middle and primary schools.Abacus is just according to people's calculating custom, mandatory provision a kind of instrument of calculating number.The advantage of tradition abacus is: easy to carry, simple in structure, easy, but its weak point is: the frequent decade of meeting, increased the probability of makeing mistakes to calculating, and seriously influenced computing velocity.

The purpose of this utility model is to design a kind of new-type abacus, and it is on the basis of traditional abacus, has increased a part again.This combination abacus has not only kept the rule and the algorithm of traditional abacus, and can also meet 30 to enter once the position, meet 20 to enter once position, also can meet 40 to enter once position, fully by individual's computing power control.Broken traditional abacus single meet the decimal system, improved computing velocity.

The purpose of this utility model is achieved in that each shelves of traditional abacus top is all prolonged, and according to order from bottom to up, each gear is all gone here and there with the pearl of 6,7,8,9 four fixed number respectively, installs frame, gets final product.For ease of upset, the pearl that increases newly is designed to square concave volume, for making with the square concave volume in the shelves when rotated, does not interfere with each other, and available crossbeam is kept apart it.The literary style of number is: it is write on two corresponding concave surfaces of square concave volume, and two remaining concave surfaces are blank.Whenever square concave volume rotation an angle of 90 degrees, number face and blank face have just alternately appearred on the concave surface, when pearl is participated in calculating, above digital face rotated to, otherwise, above blank face rotated to.For simplicity, newly-increased abacus part after can independent earlier processing assembling finishing, with hanging ditch or the screw combinations top to traditional abacus, can realize the utility model.

The utility model is compared the advanced part that is had and is with prior art, traditional abacus (calculating) by last 5 pearls of each grade, and its number sum is 9, on average each pearl is born 1.8 numbers.And newly-increased abacus part has the pearl of 6,7,8,9 four fixed number on every grade, and the number sum is 30.After being combined to it on traditional abacus, have nine pearls on each shelves, the number summation is 39, average each pearl can be born 4.3 numbers, not only reduce the frequent number of times of dialling pearl, and increased the number of storing on every gear, increased the number of carry, therefore, improved operation efficiency.

As the above analysis, the number that the pearl on each gear of abacus is on average born is big more, and operation efficiency is just high more.Therefore, we can change four pearls under traditional abacus crossbeam the pearl of fixed number into, promptly are replaced with the pearl of 1,2,3,4 fixed number from bottom to up successively, and the last number sum of each shelves is 15 so; Partly be grouped together with newly-increased abacus, it is 45 that each shelves is gone up the number summation, and on average each pearl is being born 5 numbers, and therefore, operation efficiency is just higher.

The utility model will be further described below in conjunction with accompanying drawing:

Fig. 1 is the schematic perspective view of square concave volume.

Fig. 2 is the front view of Fig. 1.

Fig. 3 is the vertical view of Fig. 1.

Fig. 4 is the left view of Fig. 1.

Fig. 5 is the abacus synoptic diagram that increases newly.

The frame of crossbeam 3. pearls 4. abacuses of shelves 2. abacuses of 1. abacuses among the figure.

In the drawings, each shelves 1 is gone here and there four pearls 3 respectively, and its grade spacing is equated with the shelves spacing of traditional abacus, is installed in the frame 4, does not interfere with each other when rotated for making the pearl in same grade, with crossbeam 2 pearl is separated.In every grade 1, according to order from bottom to up, write on 6,7,8,9 respectively on the pearl 3, concrete literary style is: on two corresponding concave surfaces of each square concave volume such as Fig. 1, write identical number, all the other two corresponding concave surfaces be blank.When square concave volume rotation an angle of 90 degrees, just can checker number face and blank face.When pearl 3 is participated in calculating, above the number face forwarded to, get final product, otherwise, above blank face is turned to.The abacus that increases newly, combination is fixed on the top of traditional abacus, promptly constitutes the utility model.

Claims

1, a kind of novel combination abacus, combine by traditional type abacus and newly-increased abacus, it is characterized in that: all be provided with four square matrix pearls on each gear of newly-increased abacus, each matrix pearl all is marked with numeral on its corresponding two sides, and this matrix pearl can rotation up and down on the abacus gear.

2, a kind of novel combination abacus according to claim 1 is characterized in that: will increase top or the bottom of abacus secured in parallel at traditional abacus newly with screw rod or hook.