CN2134798Y - Stationery case for students capable of checking and optometering - Google Patents
Stationery case for students capable of checking and optometering Download PDFInfo
- Publication number
- CN2134798Y CN2134798Y CN 92229213 CN92229213U CN2134798Y CN 2134798 Y CN2134798 Y CN 2134798Y CN 92229213 CN92229213 CN 92229213 CN 92229213 U CN92229213 U CN 92229213U CN 2134798 Y CN2134798 Y CN 2134798Y
- Authority
- CN
- China
- Prior art keywords
- checking
- writing case
- function
- emitting diode
- light emitting
- 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
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- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The utility model relates to a multifunctional stationery box used for students. The multifunctional stationery box has the stationery storing function and light detecting function of eyesight prevention, and particularly has the function of mathematics checking calculation. A checking calculation device is formed in the way that a press key, a number value calculating integrated block, a true-false judging integrated block, a light emitting diode, etc. are assembled on the relative position of a printed circuit board. Primary formula and manual calculating results are converted to electrical signals to be input into a number value calculating electric circuit by the press keys to be calculated and compared with results. A group of electrical signals are input into the true-false judging electric circuit to be judged and an electrical signal is output after the comparison is finished, and the electrical signal is converted to a light signal by the light emitting diode. The green light means 'correct' and the red light means 'wrong'; thus, the function of mathematics checking calculation is realized.
Description
The student checks the photometry writing case and has the ordinary writing case purposes, also has the function of checking computations, photometry.
Though the writing case of selling on the market has the photometry function, do not possess the checking computations function, and the calculator of selling on the market can check, but owing to demonstrate the median and the final result of computational process.Like this, the disadvantage that certainly will cause the student to rely on calculator and do not use brain, and education of middle and primary schools does not allow to use.
The purpose of this invention is to provide a kind of writing case, to improve learning efficiency and to increase learning interest by non-electrical signal demonstration result of calculation correctness.
The mode of the objective of the invention is is finished: after former formula was imported by button, the signal of telecommunication entered the numerical operation circuit, through computing, the result is imported one group of signal of telecommunication; The result that will manually compute imports by button again, and the numerical operation circuit is exported another group signal of telecommunication again.Two groups of signals of telecommunication compare, if identical, it is correct then to manually compute the result.If variant, then manually compute erroneous results.Pass through logical operation through one group of signal of telecommunication relatively, be converted into a kind of non-electrical signal, tell the operator correctness.Checking computations do not show any median and final result numerical value, do not influence the cultivation of manual calculation, and can revise the mistake of manual calculation.
Embodiments of the invention can further specify with Fig. 1, Fig. 2, Fig. 3, Fig. 4:
Fig. 1 overall layout chart of the present invention
Fig. 2 checks the light measurer structure chart
Fig. 3 checks the device block diagram
The special-purpose integrated package logic chart of Fig. 4
The present invention is made up of writing case (4), photometry checking computations device (2), power pack (3) and over cap (1).Power supply in the power pack adopts DC3.0V, and photometry checking computations device and writing case are fastenedly connected.
In Fig. 2, photometry shows that variable color light emitting diode (5), photo resistance (6), checking computations show that variable color light emitting diode (7) all is welded on the relevant position of printed substrate (15), panel is kept respective apertures on (8), is used for showing and receiving light.Photometry shows that variable color light emitting diode (5) common port is through button
Connect with Vss, " L " end connects (see figure 4) with GC, and " H " end connects with G C; Checking computations show that the common port of variable color light emitting diode (7) is through button
Connect with Vss, " L " end is connected with y, and " H " end connects with y; Photo resistance (6) is gone up to connecting at printed substrate (15) with the variable resistor (17) of 51K Ω, and common port connects with GR, photo resistance (6) other end and V
DDConnect another termination Vss of variable resistor (17); Two electrolytic capacitor filters (9) C=1 μ F, "+" hold and correct errors and judge the G of integrated package (10)
1, G
2Link, "-" termination Vss corrects errors and judges integrated package (10), numerical operation integrated package LI3301A(11) be welded on the shown position of printed substrate (15).The latter half of printed substrate (15) is the static contact and the corresponding printed wire of key switch, conductive film (14) is printed on the moving contact and the corresponding line of key switch, topped on printed substrate (15), elastic rubber sheet (13) is pressed on the conductive film (14), button (12) is bumped in panel (8) corresponding aperture, is pressed in the last power supply (16) of elastic rubber (13) and passes through
Keyed jointing leads to all V
DDAnd Vss.After printed substrate (15) and panel (8) are fastening, form photometry checking computations device integral body.
The realization of checking computations function is made up of five parts among Fig. 3." power supply " provides the energy for the checking computations device, and " input control possesses former formula and manually computes the function that the result is converted to signal of telecommunication input " numerical operation " part and imperative instruction control, is realized by button (12)." numerical operation " has the function of computing, comparison, finished by integrated package (11)." judgement of correcting errors " finished by integrated package (10)." conversion equipment " shows the function that variable color light emitting diode (7) is realized by checking computations.
As shown in Figure 4: integrated package (11) is with comparative result optional signals I
A, I
B, II
ASelect signal H with section
3, H
4In the input integrated package (10), carry out logical operation according to logical relation shown in this figure, integrated package (10) is imported y(y with operation result) signal of telecommunication.If checking computations show variable color light emitting diode (7) (when y is high level) and are green glow, then calculate correct; If checking computations show variable color light emitting diode (7) (when y is low level) and are ruddiness, then mistake in computation.
Photometry shows that variable color light emitting diode (5) (when G C is high level) is green glow, and then the light lightness reaches more than the 100IX, satisfies the academic environment requirement; GC is ruddiness during for low level.The study of then should not reading a book.
Claims (5)
1, writing case that the student uses, the realization that it is characterized in that checking the checking computations function of light measurer (2) is made up of power supply, input control, numerical operation, the judgement of correcting errors, conversion equipment.Checking computations light measurers (2) are fastened on the writing case (4).
2, according to the writing case of claim 1., it is characterized in that checking correcting errors of light measurer (2) and judge special-purpose integrated package (10), variable color light emitting diode (7) is welded on the printed substrate (15).
3,, it is characterized in that the C of special-purpose integrated package (10) according to the writing case of claim 2.
1, C
2Link with electrochemical capacitor (9) "+" end; "-" termination Vss of electrochemical capacitor (9).
4,, it is characterized in that operation result is by special-purpose integrated package (10) input y(y according to the writing case of claim 2. or 3.) signal of telecommunication, manual calculation is correctness as a result, is shown by non-electrical signal variable color light emitting diode (7).
5,, it is characterized in that adopting in the power supply (3) DC3.0V according to the writing case of claim 2. or 3. or 4..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92229213 CN2134798Y (en) | 1992-07-25 | 1992-07-25 | Stationery case for students capable of checking and optometering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92229213 CN2134798Y (en) | 1992-07-25 | 1992-07-25 | Stationery case for students capable of checking and optometering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2134798Y true CN2134798Y (en) | 1993-06-02 |
Family
ID=33772658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92229213 Expired - Fee Related CN2134798Y (en) | 1992-07-25 | 1992-07-25 | Stationery case for students capable of checking and optometering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2134798Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105942694A (en) * | 2016-04-27 | 2016-09-21 | 黑龙江大学 | Pencil box having calculation automatic judging function for primary mathematics |
-
1992
- 1992-07-25 CN CN 92229213 patent/CN2134798Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105942694A (en) * | 2016-04-27 | 2016-09-21 | 黑龙江大学 | Pencil box having calculation automatic judging function for primary mathematics |
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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 |