CN2533499Y - Digital abacus - Google Patents
Digital abacus Download PDFInfo
- Publication number
- CN2533499Y CN2533499Y CN 02207856 CN02207856U CN2533499Y CN 2533499 Y CN2533499 Y CN 2533499Y CN 02207856 CN02207856 CN 02207856 CN 02207856 U CN02207856 U CN 02207856U CN 2533499 Y CN2533499 Y CN 2533499Y
- Authority
- CN
- China
- Prior art keywords
- shelves
- abacus
- bead
- calculating
- pearl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000011324 bead Substances 0.000 claims abstract description 19
- 238000004364 calculation method Methods 0.000 claims abstract description 8
- 230000000295 complement effect Effects 0.000 claims description 2
- 210000001747 pupil Anatomy 0.000 abstract description 3
- 230000000007 visual effect Effects 0.000 abstract 1
- 239000011049 pearl Substances 0.000 description 14
- 230000007547 defect Effects 0.000 description 1
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- Instructional Devices (AREA)
Abstract
The utility model relates to a digital abacus includes dish shelves, dish roof beam, calculates shelves, abacus, and characterized by calculates the cross section of shelves and be ellipse, fan-shaped or polygon, all marks the figure on every abacus, and its marking mode is for starting from the right side left and calculating last pearl superscript "5" on the shelves, all marks "1" on the lower pearl, and the figure of marking on the abacus on every shelves of calculating behind all is ten times of the figure on the corresponding abacus on the preceding shelves of calculating. Its advantages are visual structure, obvious mark on each bead, and suitable for beginners, especially pupils, to learn and master the knowledge of calculation with abacus.
Description
The utility model relates to a kind of Digital abacus, belongs to the counter class.
Abacus is born so far from it at the applicating history of the existing more than one thousand years of China, plays an important role.Existing abacus mainly contains five pearls, six pearls, three kinds of abacuses of seven pearls, and the most commonly used with five pearls, its computing method are five liters of decimal systems.These abacus major defects are no any marks on bead, look directly perceived inadequately, for the beginner particularly the pupil learn rechoning by the abacus knowledge certain degree of difficulty arranged.
The purpose of this utility model provides and a kind ofly is marked with the visible marking at bead, the Digital abacus of easily learning directly perceived.
The purpose of this utility model is realized by following mode:
The utility model comprises dish shelves, Pan Liang, calculation shelves, bead, the xsect that it is characterized in that calculating shelves is oval, fan-shaped or polygon, on each bead, all indicate numeral, its mark mode is for playing the last pearl subscript " 5 " on first calculation shelves from right to left, equal mark " 1 " on the following pearl, the back each to calculate the numeral that marks on the bead on the shelves all be that the last shelves of calculating are gone up ten times of numeral on the corresponding bead.
The utility model has the advantages that structure is very directly perceived, all underlined on each pearl, be convenient to the beginner particularly the pupil learn rechoning by the abacus knowledge, just this pearl representative is several as can be seen from the bead, makes the study rechoning by the abacus become simpler.
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is for calculating the structural representation of shelves;
Fig. 3 is the left view of Fig. 2.
With reference to accompanying drawing, the utility model comprises dish shelves 1, dish beam 2, calculate shelves 3, bead 4, the xsect of calculating shelves 3 is oval, fan-shaped or polygon, the pearl eye shape of bead 4 is complementary with the shape of the xsect of calculating shelves 3, its objective is that control bead 4 can only slide up and down on the shelves 3 and can not left-right rotation calculating, on each bead 4, all indicate numeral, its mark mode is for playing the last pearl subscript " 5 " on first calculation shelves from right to left, all mark on the following pearl " 1 ", the numeral that marks on the bead on each calculation shelves of back all is that the last shelves of calculating are gone up ten times digital on the corresponding bead, i.e. second last pearl subscript of calculating on the shelves " 50 ", all mark on the following pearl " 10 ", each following pearl of calculating on the shelves 3 can be four, also can be five.
Claims (2)
1, a kind of Digital abacus, comprise dish shelves, Pan Liang, calculation shelves, bead, the xsect that it is characterized in that calculating shelves is oval, fan-shaped or polygon, on each bead, all indicate numeral, its mark mode is for playing the last pearl subscript " 5 " on first calculation shelves from right to left, equal mark " 1 " on the following pearl, the back each to calculate the numeral that marks on the bead on the shelves all be that the last shelves of calculating are gone up ten times of numeral on the corresponding bead.
2, Digital abacus according to claim 1, the pearl eye shape that it is characterized in that bead is complementary with the shape of the xsect of calculating shelves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02207856 CN2533499Y (en) | 2002-03-12 | 2002-03-12 | Digital abacus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02207856 CN2533499Y (en) | 2002-03-12 | 2002-03-12 | Digital abacus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2533499Y true CN2533499Y (en) | 2003-01-29 |
Family
ID=33688712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02207856 Expired - Fee Related CN2533499Y (en) | 2002-03-12 | 2002-03-12 | Digital abacus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2533499Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107945624A (en) * | 2017-10-18 | 2018-04-20 | 金碧波 | A kind of pearl bar of abacus learning machine |
| CN108008760A (en) * | 2017-10-18 | 2018-05-08 | 金碧波 | A kind of Abacus frame of abacus learning machine |
-
2002
- 2002-03-12 CN CN 02207856 patent/CN2533499Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107945624A (en) * | 2017-10-18 | 2018-04-20 | 金碧波 | A kind of pearl bar of abacus learning machine |
| CN108008760A (en) * | 2017-10-18 | 2018-05-08 | 金碧波 | A kind of Abacus frame of abacus learning machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |