CN209044420U - Five dimension abacus - Google Patents
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- CN209044420U CN209044420U CN201822100948.0U CN201822100948U CN209044420U CN 209044420 U CN209044420 U CN 209044420U CN 201822100948 U CN201822100948 U CN 201822100948U CN 209044420 U CN209044420 U CN 209044420U
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Abstract
The utility model provides a kind of five dimension abacus, is related to operational tool technical field, solves the technical issues of traditional abacus lacks formal operation training function.The five dimensions abacus, including frame, beam, shelves, pearl code and number, the beam are arranged in the frame, and the shelves are arranged in the frame, and are divided by the beam and to perform and lower gear；The quantity of the shelves is five, and from left to right successively are as follows: the second from left shelves, the first from left shelves, middle gear, right one grade and right second gear；It is provided with the pearl code of identical quantity on performing described in all, and represents number 5；It is provided with the pearl code of different number on all lower gears, and respectively represents one in several 0-4.The utility model is corresponding with pearl code position numerical chracter, and the operation of number is completed in the operation that children can be converted by pearl code position.
Description
Technical field
The utility model relates to operational tool technical fields, more particularly to a kind of five dimension abacus.
Background technique
The research object of mathematics is several and shape, and number and shape here is all the object of abstract form, childhood be several
The critical period that concept is formed, in the Yao Jingli object operation stage, in the vivid stage, in the formal symbol stage, time span has 5-6's
Time, the mode without the construction of same number of stages is different, and individual difference is bigger, it is therefore desirable to have general
Auxiliary tool trains the formal operation of children.
Abacus is a kind of general mathematics calculator, and rechoning by the abacus is ancient Chinese algorithm, is also being used so far, its main feature is that simply
Easy to learn, arithmetic speed is fast；Rechoning by the abacus belongs to vivid operation, is to indicate number with pearl code.And it is shape that existing mathematical system, which is commonly used,
Formula operation, formal operation are with abstract symbol table registration word and to carry out logical operation, that is, utilize the pass between number and number
System carries out operation, therefore there is certain contradictions with existing mathematical system for traditional rechoning by the abacus, that is to say, that traditional rechoning by the abacus is not
Have the function of developing children's logical thinking.
Utility model content
The purpose of this utility model is to provide a kind of five dimension abacus, lack formal operation instruction to solve traditional abacus
Do exercises can the technical issues of.
The utility model provides a kind of five dimension abacus, including frame, beam, shelves, pearl code and number, the beam setting
Upper ledge and lower frame are divided into the frame, and by the frame, and the shelves are arranged in the frame, and on being divided by the beam
Shelves and lower gear；The quantity of the shelves is five, and from left to right successively are as follows: the second from left shelves, the first from left shelves, middle gear, it is right one grade and
Right second gear；The second from left shelves include that the second from left performs and the second from left lower gear, and the first from left shelves include that the first from left performs and the first from left lower gear, during middle gear includes
Between perform and intermediate lower gear, right one grade includes that the right side one is performed and a right lower gear, and right two grades include that the right side two is performed and right two lower gears；Institute
There is the pearl code for being provided with identical quantity on described perform, and represents number 5；Different number is provided on all lower gears
Pearl code, and respectively represent one in several 0-4；Pearl code on intermediate lower gear represents number 0, the pearl on the first from left lower gear and a right lower gear
The number that code represents and be 5, the number that the pearl code on the second from left lower gear and right two lower gears represents and be 5；The beam is equipped with and institute
Grade corresponding number of pearl code is stated, the number includes upper number of rows word and lower number of rows word, and the upper number of rows word represents corresponding described
The sum of number representated by all pearl codes on shelves, the lower number of rows word represent number representated by the corresponding lower gear pearl code.
Preferably, the second from left lower gear and it is two grades right on the number that represents of pearl code and be 10, the first from left lower gear and it is one grade right on
The number that pearl code represents and be 10, the number that the pearl code on a right lower gear and the first from left shelves represents and be 10, right two lower gears and the second from left
On shelves pearl code represent number and be 10.
Preferably, all quantity for performing pearl code are one, and represent number 5.
Preferably, the pearl code on all lower gears represents number 1.
Preferably, the second from left lower gear, the first from left lower gear, intermediate lower gear, a right lower gear and the corresponding lower number of rows word of right two lower blocks
Successively are as follows: 3,4,0,1,2, the corresponding upper number of rows word is successively are as follows: 8,9,5,6,7.
Preferably, the second from left lower gear, the first from left lower gear, intermediate lower gear, a right lower gear and the corresponding lower number of rows word of right two lower blocks
Successively are as follows: 2,1,0,4,3, the corresponding upper number of rows word is successively are as follows: 7,6,5,9,8.
Preferably, the second from left lower gear, the first from left lower gear, intermediate lower gear, a right lower gear and the corresponding lower number of rows word of right two lower blocks
Successively are as follows: 2,4,0,1,3, the corresponding upper number of rows word is successively are as follows: 7,9,5,6,8.
Preferably, the second from left lower gear, the first from left lower gear, intermediate lower gear, a right lower gear and the corresponding lower number of rows word of right two lower blocks
Successively are as follows: 1,2,0,3,4, the corresponding upper number of rows word is successively are as follows: 6,7,5,8,9.
Preferably, the frame is rectangle frame.
Preferably, the pearl code is threaded through on the shelves.
Preferably, abacus clearing device is additionally provided on the frame, it is uncalculated first that the abacus clearing device can be such that the code of the pearl on shelves returns
Beginning position.
Preferably, foot pad is additionally provided on the frame.
Preferably, the five dimension abacus further include numeration area
The utility model has the beneficial effects that the five dimension abacus of the utility model, numerical chracter and pearl code position phase
Corresponding, the operation of number is completed in the operation that can be converted by pearl code position, and children can learn number by five dimension abacus
Formal operation.The purpose of children for learning mathematics is Development Logic thinking, and number is the most basic content of mathematics, and several calculating is same
It needs to show the relationship between number and number, shows mathematical thinking mode.And the rechoning by the abacus of China is better than calculating, in the mechanization of calculating
Aspect has been accomplished ultimate attainment, algorithm is succinct, operation save it is mental.The deficiency of rechoning by the abacus is that the operation of it and formalization exists larger
Difference, do not have the characteristics of ability of Development Logic thinking.
The utility model preferred embodiment has the further advantage that
1, formal operation and vivid operation are united in five dimension rechonings by the abacus, firstly, number is shown on beam, in abacus
Center；Secondly, indicating that, for number relationship, number is realized with pearl code and corresponded with shelves；Third, between number in gather,
Gather outside, complement relationship is unified for the symmetric relation of figure, straightforward, convenient for observation, memory, application.
2, the age that children carry out form calculus training is reduced, children carry out 6 years old left side of age starting point of formal operation
The right side, since individual difference is bigger, after individual children can postpone till 8 years old.Five dimension rechonings by the abacus are to complete shape with the method for operation
The operation of formula, age can be carried out at 4 years old or so.
3, the difficulty of teaching is reduced, original development degree for needing the detailed test children mathmatics intelligence before teaching reaches
To the horizontal children of vivid operation, need excessively just to can be carried out formal operation training well.Excessive instruction can be saved now
Practice, is convenient for class teaching in this way.
4, the memory to addition subtraction meter is completed in operation, is eliminated a large amount of rote memory training, is improved children
The interest of study.
5, the mathematical thinking mode for inspiring the digital form of children to convert with pearl code conversion.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of 1 five dimension abacus in embodiment；
Fig. 2 is the structural schematic diagram of the 1 five dimension abacus including numeration area in embodiment；
Fig. 3 is the structural schematic diagram of 2 five dimension abacus in embodiment；
Fig. 4 is the structural schematic diagram of 3 five dimension abacus in embodiment；
Fig. 5 is the structural schematic diagram of 4 five dimension abacus in embodiment.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
Embodiment 1
As shown in Figure 1, present embodiments providing a kind of five dimension abacus, including frame 1, beam 2, shelves, pearl code 4 and number
Word, beam 2 are arranged in frame 1, and frame 1 is divided into upper ledge 11 and lower frame 12, shelves be it is rod-shaped, pearl code is threaded through on bar；Shelves setting
In frame 1, and be divided by beam 2 and to perform and lower gear, perform on pearl code 4 be upper pearl code, the pearl code 4 on lower gear is lower pearl code；
There is the pearl code 4 of different number on different shelves, pearl code 4 can be moved up and down along the direction of shelves, and in the present embodiment, frame 1 is square
Shape frame.It is corresponding perform with lower gear can be same bar across beam 2 be arranged on frame 1, be also possible to two sections of bars and be correspondingly arranged at
The two sides of beam 2.For ease of use, abacus clearing device is additionally provided on frame 1 described in the present embodiment, the abacus clearing device can make on shelves
Pearl code 4 returns uncalculated initial position, and uncalculated initial position is that all lower pearl codes and upper pearl code are remote in the present embodiment
Position from beam.In order to prevent to the abrasion of frame 1, it is additionally provided with foot pad on the frame 1, foot pad is arranged in the bottom surface of frame 1, is used for
Abacus on the table is placed in support.
The quantity of shelves is five, and from left to right successively are as follows: the second from left shelves, the first from left shelves, middle gear, right one grade and the right side two
Gear；The second from left shelves include that the second from left performs and the second from left lower gear 33, and the first from left shelves include that the first from left performs and the first from left lower gear 34, during middle gear includes
Between perform and intermediate lower gear 30, right one grade includes that the right side one is performed and a right lower gear 31, right two grades include the right side two perform and the right side two under
Shelves 32, it is all perform on be provided with the pearl code 4 of identical quantity, and represent number 5, performing in the present embodiment upper wears one
A pearl code 4, a pearl code 4 represent number 5, may also set up multiple pearl codes 4 certainly, and the summation of multiple pearl codes 4 represents number 5.
The pearl code 4 of different number is provided on different lower gears, five lower gears respectively represent one in five numbers of 0-4, this
In embodiment, the pearl code 4 on lower gear represents number 1, naturally it is also possible to which multiple pearl codes 4 represent number 1, such as two pearl 4 generations of code
Table number 1, a pearl code 4 represent number 0.5；Wherein, the pearl code 4 on intermediate lower gear 30 represents number 0, the first from left lower gear 34 and the right side one
The number that pearl code 4 on lower gear 31 represents and be 5, the sum of the number that the pearl code 4 on the second from left lower gear 33 and right two lower gears 32 represents as
5；The second from left lower gear 33 and it is two grades right on the number that represents of pearl code 4 and be 10, the first from left lower gear 34 and it is one grade right on pearl 4 generations of code
The number of table and be 10, the number that the pearl code 4 on a right lower gear 31 and the first from left shelves represents and be 10, right two lower gears 32 and the second from left shelves
On pearl code 4 represent number and be 10；Beam 2 is equipped with number corresponding with pearl code on shelves, and number includes upper number of rows word under
Number of rows word, upper number of rows word represent the sum of number representated by all pearl codes 4 on corresponding shelves, and lower number of rows word represents corresponding lower gear
Number representated by upper pearl code, such as Fig. 1, the second from left lower gear shown in the present embodiment 33, the first from left lower gear 34, intermediate lower gear 30, the right side are once
Shelves 31 and the right corresponding lower number of rows word of two lower block 32 are successively are as follows: 3,4,0,1,2, corresponding upper number of rows word is successively are as follows: 8,9,5,
6,7.Beam 2 is in the middle position of abacus, and the character matrix for having two rows five to arrange above is constituted, and upper row's numeric word 5 is 89567, under
Arranging numeric word 5 is 34012, and first is classified as 83, and second is classified as 94, and third is classified as 50, and the 4th is classified as 61, and the 5th is classified as 72.
One, basic ideas
Number is indicated close to 2 position of beam with the pearl of five dimension rechonings by the abacus code 4；
Positive bit pairing is indicated with 4 number of pearl code of five dimension rechoning by the abacus beams 2 is identical as number on beam 2；
Digital operation is carried out with from the transformation of beam 2 with the close beam 2 of five dimension rechoning by the abacus pearl codes 4.
Two, the rule operated
Pearl 4 registrations of code, show the number for needing operation with pearl code 4.
Pearl 4 operations of code, the operation with removal is merged to pearl code 4.
Pearl code 4 is translated as number with number, by pearl code 4, obtains operation result.
Three, this bit manipulation of plus and minus calculation.
The pearl code 4 of the close beam 2 of different stalls is merged into the operation on same shelves by union operation.
The operation of a part is removed the pearl code 4 close to beam 2 in removal operation.
There are two pearl codes in union operation in the advance and retreat bit manipulation of plus and minus calculation, the behaviour of two pearl code removals simultaneously
Make the carry operation for being known as addition；In removal operation, pearl code 4 not enough, while increasing by two pearl codes and being known as close to the operation of beam 2
It gives up the throne operation.
Four, operational instances
Example 1:163+571=734
Calculate a position:
The first step finds summand units 3 on beam 2, and it is close to dial pearl code under the whole of corresponding shelves (the second from left lower gear 33)
Beam 2.
Second step finds addend units 1 on beam 2, and pearl code is close to beam 2 under dialling corresponding shelves (a right lower gear 31) all.
Third step is merged into pearl code 4 on the same shelves, obtains corresponding number 4.
Calculate tens:
The first step finds summand tens 6 on beam 2, dials the whole pearl codes 4 of corresponding shelves (one grade right) close to beam 2.
Second step finds addend tens 7 on beam 2, dials the whole pearl codes 4 of corresponding shelves (two grades right) close to beam 2.
Third step merges pearl code 4, there is two pearl codes 4 on beam 2, and is 10 together, and hundred into 1, lower pearl code, which merges, to be obtained
Corresponding number 3.
Calculate hundreds:
The first step finds summand hundreds 1 on beam 2, and pearl code is close to beam under dialling corresponding shelves (a right lower gear 31) all
2。
Second step finds addend hundreds 5 on beam 2, dials corresponding shelves middle gear whole pearl code 4 close to beam 2.
Third step 4 is merged into pearl code on the same shelves, obtains corresponding number 6, then plus ten carries 1, dial under 1
Pearl code is merged into the right second gear of the same shelves and obtains corresponding number 7 close to beam 2
4th step, obtains operation result: 163+571=734
Example 2,308-185=123
Calculate units
The first step finds the units 8 of minuend on beam 2, dials whole pearls code 4 of corresponding shelves (the second from left shelves) close to beam
2。
Second step goes 5 the second from left of subtrahend units to perform corresponding pearl code 4 dialling in the pearl of beam 2 code 4.
Third step finds 4 corresponding numbers 3 (the second from left lower gear 33) of remaining pearl code
Calculate tens
The first step finds the tens 0 of minuend on beam 2, and it is close to dial pearl code under the whole of corresponding shelves centre lower gear 30
Beam 2.
Second step removes the corresponding pearl of subtrahend tens 8 code 4 dialling in the pearl of beam 2 code 4, and not enough, hundred are moved back pearl code 4
1, one's own department or unit adds 10, and the pearl code 4 of group number 8 corresponding shelves (the second from left shelves) is right with the complement shelves (the second from left lower gear 33) of symmetrical shelves 8 close to beam 2
Answer pearl code 4 close to beam 2.
Third step dials the pearl code 4 of number 8 corresponding shelves (the second from left shelves) from beam 2.
4th step finds 4 corresponding numbers 2 of remaining pearl code.
Calculate hundreds:
The first step finds the hundreds 3 of minuend on beam 2, dials pearl code under the whole of corresponding shelves (the second from left lower gear 33) and leans on
Nearly beam 2.
Second step removes the corresponding pearl of subtrahend hundreds 1 code 4 dialling in the pearl of beam 2 code 4.
Third step removes 1 corresponding pearl code 4 of giving up the throne in the pearl code 4 groups close to beam 2.
4th step finds 4 corresponding numbers 1 of remaining pearl code.
5th step, obtaining difference is 123.
In two operational instances, a position for respectively obtaining, ten, hundred calculated result need individually to record, example
Such as be recorded on paper or user memoriter power note in oneself brains.In order to facilitate the obtained data of record different step,
As shown in Fig. 2, can also extend numeration area in the outside of frame in the present embodiment, numeration area includes a position shelves, ten shelves, hundred
Shelves, can record respectively different step and obtain calculated result.Such as in operational instances 1, after calculating the number 4 that a position obtains, then
Corresponding pearl code 4 is transferred on a position shelves in numeration area, that is, descends pearl code all by beam；Calculate ten obtain number 3 and hundred into
1, then transfer to 3 lower pearl codes to lean on beam on ten shelves in numeration area, while 1 lower pearl code being transferred to lean on beam on hundred shelves；Calculate hundred
Position obtains number 6, dials upper pearl code and 1 lower pearl code again on hundred shelves by beam, obtains final result 734.
The characteristics of five dimension abacus of the present embodiment:
It is digital to be corresponded with pearl code 4, change the form relation of total intuitively；
Five liters of decimal systems of ancient Chinese algorithm are inherited in easy rechoning by the abacus, and operation is allowed to become more succinct；
It is indicated with same shelves for number relationships, the geometrically symmetric relationships of shelves gathers in indicating, gathers outside and complement relationship.
1, five dimension abacus
Five dimension abacus are made of frame 1, beam 2, number, shelves, pearl code 4, are starting point with 0, centered on 5, to close for number
The quantitative relation map that system is unfolded for dimension, visualizes quantitative relation.
2,4 registrations of pearl code
Pearl code 4 indicates number close to beam 2.
3, for number
It is for number relationship that the relationship of two numbers in same shelves, which is for number relationship, 0 and 5,1 and 6,2 and 7,3 and 8,4 and 9,.
For several relationships, a surprise one is even, differs 5 between logarithm.
5 for number be 0,0 replace number be 5；
6 for number be 1,1 replace number be 6；
7 for number be 2,2 replace number be 7；
8 for number be 3,3 replace number be 8；
9 for number be 4,4 replace number be 9.
4, it makes up the number or amount
Making up the number or amount is the symmetric relation of lower number of rows word, upper number of rows word, and the symmetric relation of lower number of rows word is gathered in, upper number of rows word
Symmetric relation gathering outside
1 make up the number or amount be 4,4 to make up the number or amount be 1；
2 make up the number or amount be 3,3 to make up the number or amount be 2；
6 make up the number or amount be 9,9 to make up the number or amount be 6
7 make up the number or amount be 8,8 to make up the number or amount be 7.
5, complement
Complement is the symmetric relation of lower number of rows word Yu upper number of rows word.1 and 9,2 and 8,3 and 7,4 and 6,5 and 5.
It is 6 that 1 complement, which is 9,4 complement,；
It is 7 that 2 complement, which is 8,3 complement,；
5 complement or 5.
It is 4 that 9 complement, which is 1,6 complement,；
It is 3 that 8 complement, which is 2,7 complement,；
5 complement or 5.
To sum up, five dimension rechonings by the abacus are transformed traditional Abacus for calculation.First, indicating the character matrix of 0-9 on beam 2；
Second, changing the purposes of shelves, it is currently used to indicate to indicate that 0 and 5 replace the shelves of number relationship in middle position, the right side one for number relationship
Shelves 1 and 6, right two grade 2 and 7, the first from left shelves 4 and 9, the second from left shelves 3 and 8；Fourth, remaining five liters of decimal systems in rechoning by the abacus algorithm, beam
Lower number of rows word on 2 indicates that the upper number of rows word on beam 2 is with upper and lower pearl code simultaneously close to beam 2 come table with lower pearl code close to beam 2
Show.It can change for the symmetric arrays mode of number, but the symmetric relation of pearl code does not change；It can be using this abacus as one
Divide and reconfigured with traditional abacus, realizes the separation of numeration with calculating；Several plus and minus calculations is reduced to adding for lower number of rows word
Subtract operation；Pearl 4 grades of symmetric relation of code can show in number gather, gather outside, complement relationship.
Embodiment 2
As shown in figure 3, the difference of the present embodiment and embodiment 1 is: the second from left lower gear 33, the first from left lower gear 34, intermediate lower gear 30,
A right lower gear 31 and the corresponding lower number of rows word of right two lower block 32 are successively are as follows: and 2,1,0,4,3, corresponding upper number of rows word is successively are as follows:
7、6、5、9、8。
Embodiment 3
As shown in figure 4, the difference of the present embodiment and embodiment 1 is: the second from left lower gear 33, the first from left lower gear 34, intermediate lower gear 30,
A right lower gear 31 and the corresponding lower number of rows word of right two lower block 32 are successively are as follows: and 2,4,0,1,3, corresponding upper number of rows word is successively are as follows:
7、9、5、6、8。
Embodiment 4
As shown in figure 5, the difference of the present embodiment and embodiment 1 is: the second from left lower gear 33, the first from left lower gear 34, intermediate lower gear 30,
A right lower gear 31 and the corresponding lower number of rows word of right two lower block 32 are successively are as follows: and 1,2,0,3,4, corresponding upper number of rows word is successively are as follows:
6、7、5、8、9。
More than, only specific embodiment of the present utility model, but protection scope of the utility model is not limited thereto,
Anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation or replace
It changes, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with claim
Subject to protection scope.
Claims (10)
1. a kind of five dimension abacus, it is characterised in that: including frame (1), beam (2), shelves, pearl code (4) and number, the beam
(2) setting is divided into upper ledge (11) and lower frame (12) in the frame (1), and by the frame (1), and the shelves are arranged in the frame
(1) in, and it is divided by the beam (2) and performs and lower gear；The quantity of the shelves is five, and from left to right successively are as follows: the second from left
Shelves, the first from left shelves, middle gear, right one grade and two grades of the right side；The second from left shelves include that the second from left performs and includes with the second from left lower gear (33), the first from left shelves
The first from left performs and the first from left lower gear (34), and middle gear includes that centre is performed and intermediate lower gear (30), right one grade include the right side one perform and
A right lower gear (31), right two grades include that the right side two is performed and right two lower gears (32), it is all it is described perform on be provided with identical quantity
Pearl code (4), and represent number 5；It is provided with the pearl code (4) of different number on all lower gears, and respectively represents in several 0-4
One；Pearl code (4) on intermediate lower gear (30) represents number 0, pearl code (4) generation on the first from left lower gear (34) He Youyi lower gear (31)
The number of table and be 5, the number that the pearl code (4) on the second from left lower gear (33) and right two lower gears (32) represents and be 5；The beam (2)
It is equipped with number corresponding with the shelves pearl code, the number includes upper number of rows word and lower number of rows word, and the upper number of rows word represents
The sum of number representated by all pearl codes (4) on the corresponding shelves, the lower number of rows word represent corresponding lower gear pearl code institute
The number of representative.
2. five dimensions abacus according to claim 1, it is characterised in that: the pearl code on two grades of the second from left lower gear (33) and the right side
(4) number represented and be 10, the first from left lower gear (34) and it is one grade right on the number that represents of pearl code (4) and be 10, one lower gear of the right side
(31) number that the pearl code (4) and on the first from left shelves represents and be 10, pearl code (4) representative on right two lower gears (32) and the second from left shelves
It is several and be 10.
3. five dimensions abacus according to claim 1, it is characterised in that: all quantity for performing pearl code are one
It is a, and represent number 5.
4. five dimensions abacus according to claim 1, it is characterised in that: the pearl code (4) on all lower gears
Represent number 1.
5. five dimensions abacus according to claim 1, it is characterised in that: the second from left lower gear (33), the first from left lower gear (34), in
Between lower gear (30), a right lower gear (31) and the corresponding lower number of rows word of right two lower gears (32) successively are as follows: 3,4,0,1,2, it is corresponding
The upper number of rows word is successively are as follows: 8,9,5,6,7.
6. five dimensions abacus according to claim 1, it is characterised in that: the second from left lower gear (33), the first from left lower gear (34), in
Between lower gear (30), a right lower gear (31) and the corresponding lower number of rows word of right two lower gears (32) successively are as follows: 2,1,0,4,3, it is corresponding
The upper number of rows word is successively are as follows: 7,6,5,9,8.
7. five dimensions abacus according to claim 1, it is characterised in that: the second from left lower gear (33), the first from left lower gear (34), in
Between lower gear (30), a right lower gear (31) and the corresponding lower number of rows word of right two lower gears (32) successively are as follows: 2,4,0,1,3, it is corresponding
The upper number of rows word is successively are as follows: 7,9,5,6,8.
8. five dimensions abacus according to claim 1, it is characterised in that: the second from left lower gear (33), the first from left lower gear (34), in
Between lower gear (30), a right lower gear (31) and the corresponding lower number of rows word of right two lower gears (32) successively are as follows: 1,2,0,3,4, it is corresponding
The upper number of rows word is successively are as follows: 6,7,5,8,9.
9. -8 any five dimension abacus according to claim 1, it is characterised in that: the frame (1) is rectangle frame；
And/or the pearl code (4) is threaded through on the shelves.
10. -8 any five dimension abacus according to claim 1, it is characterised in that: be additionally provided with liquidation on the frame (1)
Device, the abacus clearing device can make the code of the pearl on shelves (4) return uncalculated initial position；
And/or foot pad is additionally provided on the frame (1)；
And/or the five dimension abacus further include numeration area.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108363452A (en) * | 2018-05-09 | 2018-08-03 | 薛蔚 | A kind of selfish calculations suitable for rudimentary maths initiation education |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108363452A (en) * | 2018-05-09 | 2018-08-03 | 薛蔚 | A kind of selfish calculations suitable for rudimentary maths initiation education |
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