CN202058346U - Teaching demonstration apparatus - Google Patents
Teaching demonstration apparatus Download PDFInfo
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- CN202058346U CN202058346U CN2011200929984U CN201120092998U CN202058346U CN 202058346 U CN202058346 U CN 202058346U CN 2011200929984 U CN2011200929984 U CN 2011200929984U CN 201120092998 U CN201120092998 U CN 201120092998U CN 202058346 U CN202058346 U CN 202058346U
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- teaching demonstration
- demonstration device
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Abstract
Disclosed is a teaching demonstration apparatus, comprising a main control circuit, a display circuit, a power supply, and a control panel, wherein the main control circuit is connected with the display circuit and controls the display state of point, line, and plane of the display circuit; the power supply is connected with the main control circuit and the display circuit; and the control panel is connected with the main control circuit. The teaching demonstration apparatus features simple structure and convenient usage, and enables students to directly and visually observe the physical phenomenon that point forms a line by moving and a line forms a plane by moving, thereby arousing their interest in learning science and exploring nature.
Description
Technical field
The utility model relates to a kind of teaching demonstration device, and specifically, what relate to is a kind of teaching demonstration device that is used to demonstrate the point-line-surface principle.
Background technology
Along with epoch and human development, children's curiosity is more and more stronger now, and they are full of the exploration desire to the world of the unknown, but reason owing to the age, also development fully on the intelligence, teacher only depends on oral telling about with PPT demonstration to be difficult to allow the student understand fully thoroughly, and the student still is confused.Come aided education by relevant model, and allow student's hands-on practice, uninteresting knowledge can not only be become more lively like this, allow the student be easy to acceptance, can also motivate students' interest in learning.Simultaneously can also alleviate teacher's teaching load.
A lot of teaching demonstration devices has appearred now, demonstrate phenomenons such as various physical chemistry, such as the demonstrating electromagnetic induction phenomenon, demonstration parabolic curve phenomenon, demonstrate chemical substance dissolution phenomena or the like in addition, these play a good role for student's learning physics chemical knowledge.
Though teaching demonstration device miscellaneous has appearred in prior art, also not having a kind of is to be used for demonstration " the point is moved into a line, line moves into face ".The purpose of this utility model just provides such device.
The utility model content
The purpose of this utility model is to solve above-mentioned deficiency of the prior art, a kind of teaching demonstration device is provided, and LED waits the phenomenon of demonstrating " the point is moved into a line, line moves into face " by circuit control, with vivid the showing of physical phenomenon, be easy to the student and understand.
For realizing above-mentioned purpose, teaching demonstration device described in the utility model comprises governor circuit, display circuit, and power supply and control panel, described governor circuit is connected with described display circuit, and controls the point-line-face show state of described display circuit; Described power supply connects described governor circuit and described display circuit.Described control panel is connected with described governor circuit.
Further, described governor circuit comprises the STC single-chip microcomputer, and the STC single-chip microcomputer is that the line face forms the core that principle shows, is the control section of total system.
Further, described display circuit comprises display part and drive part, and described display part is the LED dot matrix, and described drive part adopts chip.
Further, described drive part is made up of 74LS154 and 74HC595.
Further, described STC single-chip microcomputer is lighted each LED color lamp of described display circuit LED dot matrix by its I/O mouth output high-low level by this high-low level control.
Further, described control panel is provided with the button of selecting mode of operation, comprises a display button, line display button, turbo and deceleration button, and these buttons are connected with the control end of STC single-chip microcomputer.
The utility model control panel is provided with the button of selecting mode of operation, translational speed by a Points And lines on the control dot matrix display screen, when speed is very slow, can see moving of Points And lines clearly, speed is slowly accelerated subsequently, when speed near to a certain degree the time, because the twilight sunset of lamp and people's the collimation error, make the people see a line or a plane, so just can explain the knowledge of " line is made up of numerous point; face is made up of numerous line or is made up of numerous point " basically, Here it is " the point is moved into a line, line moves into face ".
The utility model is simple in structure, and is easy to use, allows the student directly visually see the physical phenomenon of " the point is moved into a line, line moves into face ", causes the interest of student's learning science knowledge, brings out the spirit that student's exploration is sought knowledge.
Description of drawings
Fig. 1 is the outside drawing of the utility model one embodiment.
Fig. 2 is the structured flowchart of the utility model one embodiment.
Embodiment
Below in conjunction with drawings and Examples the technical solution of the utility model is further explained, but following content is not used in qualification protection domain of the present utility model.
Shown in Fig. 1-2, present embodiment provides a kind of teaching demonstration device, comprises governor circuit 1, display circuit 2, and power supply 3 and control panel 4, described governor circuit 1 is connected with described display circuit 2, and controls the point-line-face show state of described display circuit 2; Described power supply 3 connects described governor circuit 1 and described display circuit 2.Described control panel 4 is connected with described governor circuit 1.
In the present embodiment, described governor circuit 1 comprises STC single-chip microcomputer 6, and STC single-chip microcomputer 6 is that the line face forms the core that principle shows, this single-chip microcomputer passes through programming setting in advance, the display effect of control display circuit 2.In the present embodiment, adopt STC-12C5A60S2 series.
In the present embodiment, described display circuit 2 comprises display part 7 and drive part 8, and described display part 7 is the LED dot matrix, and described drive part 8 adopts chip to realize.
In the present embodiment, described drive part 8 is made of jointly 74LS154 and 74HC595.Described 74HC595 contains 8 shift register and ternary output latch.74LS154 is 4 lines-16 a line code translator.Under the control of governor circuit 1, realize the change of display part LED color lamp duty by the cooperation of 74LS154 and 74HC595.And, according to the LED dot matrix what, can select polylith 74HC595 to carry out cascade by the pin of self.
In the present embodiment, described STC single-chip microcomputer 6 is lighted each LED color lamp of described display circuit LED dot matrix by its I/O mouth output high-low level by this high-low level control.
In the present embodiment, described power supply 3 be standard+the 5V power supply.
In the present embodiment, described control panel 4 is provided with the button 9 of selecting mode of operation, comprises a display button, line display button, turbo and deceleration button, and these buttons are connected with the control end of STC single-chip microcomputer.
In the present embodiment, the STC single-chip microcomputer is the The whole control core, by programming STC single-chip processor i/o mouth is set, and exports each LED color lamp that different high-low levels is lighted dot matrix in the display circuit, realizes the effect of " the point is moved into a line, line moves into face ".Dot matrix is actual to be exactly that the LED color lamp of some is arranged according to certain rule.Each LED color lamp is exactly a point, and it is exactly the point of some that several LED color lamps are lighted simultaneously, can form line.The line of some is grouped together and has just formed face.The display circuit display part is made up of the dot matrix of 3 8*8 (length of side is 33mm), and its drive part is realized jointly by 74LS154 and 74HC595.
In the present embodiment, translational speed by the Points And lines (promptly lighting the LED color lamp) on the control dot matrix display part, when speed is very slow, can see moving of Points And lines clearly, speed is slowly accelerated subsequently, when speed near to a certain degree the time, because the twilight sunset of LED color lamp and people's the collimation error, make the people see a line or a plane, so just can explain the knowledge of " line is made up of numerous point; face is made up of numerous line or is made up of numerous point " basically, Here it is " the point is moved into a line, line moves into face ".
By above embodiment as can be seen, the utility model is simple in structure, easy to use, by demonstration,, be easy to the student and understand vivid the showing of physical phenomenon, also help teacher to be more prone to explain scientific knowledge hard to understand, alleviate teacher's teaching load, cause the interest of student's learning science knowledge, bring out the spirit that student's exploration is sought knowledge.
Claims (10)
1. a teaching demonstration device is characterized in that comprising governor circuit, display circuit, and power supply and control panel, wherein: described governor circuit is connected with described display circuit, and controls the show state of " point-line-face " of described display circuit; Described power supply connects described governor circuit and described display circuit, and described control panel is connected with described governor circuit.
2. teaching demonstration device according to claim 1 is characterized in that: described governor circuit comprises the STC single-chip microcomputer.
3. teaching demonstration device according to claim 2, it is characterized in that: described STC single-chip microcomputer adopts STC-12C5A60S2 series, this single-chip microcomputer is lighted each LED color lamp of described display circuit by its I/O mouth output high-low level by this high-low level control.
4. teaching demonstration device according to claim 1 is characterized in that: described display circuit comprises display part and drive part, and described display part is the LED dot matrix, and described drive part adopts chip.
5. teaching demonstration device according to claim 4 is characterized in that: described display part is made up of the LED dot matrix of 3 8*8.
6. teaching demonstration device according to claim 4 is characterized in that: described drive part is made of jointly 74LS154 and 74HC595.
7. teaching demonstration device according to claim 6 is characterized in that: described 74HC595 contains 8 shift register and ternary output latch, and polylith 74HC595 can carry out cascade by the pin of self.
8. teaching demonstration device according to claim 6 is characterized in that: described 74LS154 is 4 lines-16 a line code translator.
9. teaching demonstration device according to claim 1, it is characterized in that: described control panel is provided with the button of selecting mode of operation, comprise a display button, line display button, turbo and deceleration button, these buttons are connected with the control end of STC single-chip microcomputer.
10. teaching demonstration device according to claim 1 is characterized in that: described power supply be standard+the 5V power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200929984U CN202058346U (en) | 2011-04-01 | 2011-04-01 | Teaching demonstration apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200929984U CN202058346U (en) | 2011-04-01 | 2011-04-01 | Teaching demonstration apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202058346U true CN202058346U (en) | 2011-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200929984U Expired - Fee Related CN202058346U (en) | 2011-04-01 | 2011-04-01 | Teaching demonstration apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202058346U (en) |
-
2011
- 2011-04-01 CN CN2011200929984U patent/CN202058346U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20140401 |