CN203882504U - Trigger comprehensive experimental teaching aid - Google Patents
Trigger comprehensive experimental teaching aid Download PDFInfo
- Publication number
- CN203882504U CN203882504U CN201420281480.9U CN201420281480U CN203882504U CN 203882504 U CN203882504 U CN 203882504U CN 201420281480 U CN201420281480 U CN 201420281480U CN 203882504 U CN203882504 U CN 203882504U
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- China
- Prior art keywords
- trigger
- plug wire
- wire interface
- chip pad
- graphical symbol
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Abstract
The utility model discloses a trigger comprehensive experimental teaching aid. The trigger comprehensive experimental teaching aid includes an experimental box, a direct current power source module, a power source switch, a chip base, a trigger work principle experiment circuit, an addition counter experiment circuit composed of a trigger, line plugging interfaces, LED indicator lights, a double-throw switch and a pulse button switch. With the trigger comprehensive experimental teaching aid of the utility model adopted, experimental wiring of triggers can be concise and clear, and it is convenient for students to intuitively judge and analyze signals of intermediate circuits of the triggers so as to better grasp and understand the work principles and application of the triggers. The trigger comprehensive experimental teaching aid has the advantages of low cost and easiness in popularization.
Description
Technical field
The utility model relates to a kind of Teaching aid for electricity, says more specifically a kind of for demonstrating the Comprehensive Experiment teaching aid of flip-flop operation.
Background technology
Trigger, it is the important knowledge point in digital circuit, also be a knowledge difficult point, the current experimental provision about trigger, substantially be all in test panel, installed be equipped with corresponding plug wire interface chip pad, 5 volts of power supplys, one row's LED light and row's double throw switch, in experiment, the amount of wiring is larger, also be easy to unrest, this difficulty concerning a lot of new lives is also larger, and experiment finally can only be seen result, be difficult to analyze the course of work of trigger, so be not easy to principle of work and application that student goes understanding and grasps trigger, thereby do not reach good experiment teaching effect.
Utility model content
The purpose of this utility model is to overcome the existing deficiency of prior art, provides a kind of simple in structure, can allow wiring more clear succinct simultaneously, and be convenient to the analysis of student to flip-flop operation process and the trigger Comprehensive Experiment teaching aid of understanding.
For achieving the above object, the technical scheme that this reality is novel adopted is: a kind of trigger Comprehensive Experiment teaching aid, includes up counter experimental circuit, plug wire interface, LED light, double throw switch and the pulse button switch of experimental box, DC power supplier, power switch, chip pad, flip-flop operation Experiment of Principle circuit, trigger composition.
In experimental box, be provided with DC power supplier, panel is provided with power switch, and side is provided with power lead;
Described power lead is connected with external power source;
Described DC power supplier is provided with at least one group of output port;
The panel of described experimental box is provided with at least three double throw switchs and at least one pulse gauge tap, each double throw switch, pulse gauge tap all with the plug wire interface corresponding matching being provided with on experimental box panel;
On described experimental box panel, be also provided with up counter experimental circuit and at least one chip pad of flip-flop operation Experiment of Principle circuit, trigger composition;
Described chip pad is provided with multiple plug wire interfaces that are printed on name identification;
On described flip-flop operation Experiment of Principle circuit, mark has Sheffer stroke gate graphical symbol;
The input and output of described Sheffer stroke gate graphical symbol are equipped with the corresponding plug wire interface being provided with the name identification in chip pad, and described chip pad is corresponding one by one with the plug wire interface name on flip-flop operation Experiment of Principle circuit; And not gate graphical symbol identifies between two plug wire interfaces corresponding to title and realizes electric connection by cable with chip pad;
Between the described plug wire interface line being connected between two, be provided with LED light.
In the up counter experimental circuit of described trigger composition, mark has trigger graphical symbol, the input and output of described trigger graphical symbol are equipped with the plug wire interface corresponding with chip pad mark title, and identify between plug wire interface corresponding to title and realize electric connection by cable between trigger graphical symbol and chip pad; The line of the described plug wire interface being connected is between two provided with LED light.
Adopt the object of described Sheffer stroke gate graphical symbol and trigger graphical symbol to be to make the up counter experimental circuit of described flip-flop operation Experiment of Principle circuit and described trigger composition more directly perceived, the input and output plug wire interface of described Sheffer stroke gate graphical symbol or trigger graphical symbol through with described chip pad on the wiring of plug wire interface after, and install after chip in described chip pad, the input and output plug wire interface of described Sheffer stroke gate graphical symbol or trigger graphical symbol has just had real electrical connection.So just invisible chip internal circuit can be mapped on graphical symbol.
Adopt above scheme, can realize the experimental wiring simple and clear of trigger, be convenient to student and intuitively the signal of trigger intermediate circuit is judged and analytical derivation, thereby better grasp and understand principle of work and the application of trigger, meet experimental provision cost low simultaneously, very easily promote.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
For convenience of the utility model is done further to understand, existing in conjunction with Fig. 1 for an embodiment, the utility model is further explained.
Embodiment:
As shown in Figure 1, the utility model comprises experimental box 1, and be arranged on the DC power supplier in experimental box, be arranged on up counter experimental circuit 15, plug wire interface (10,11,14,20), LED light (17,22), double throw switch 26 and pulse button switch 27 that power switch 25, chip pad 12, flip-flop operation Experiment of Principle circuit 18, trigger on experimental box panel form;
Described experimental box side; Face is provided with power lead 24, and described DC power supplier is at least exported one group of 5 volts of voltage source 23.
The present embodiment, flip-flop operation Experiment of Principle circuit 18 adopts d type flip flop principle of work experimental circuit, and the up counter experimental circuit 15 of trigger composition adopts 4 asynchronous up counters of scale-of-two of d type flip flop composition.
In the present embodiment, described double throw switch 26 is at least provided with four, is provided with the described plug wire interface 10 corresponding with described double throw switch; Described pulse button switch 27 is provided with two, is equipped with described plug wire interface 10 corresponding thereto, and described LED light (17,22) is set to 17.
Described chip pad 12 is set to three, is provided with the described plug wire interface 11 corresponding with described chip pad 12 pins, and described in each, plug wire interface is provided with address name 13.
Selected chip pad 12 is 14 pin, adaptive 74LS20 and 74LS74, and to same described chip pad, outer address name 13 is set to the pin address name of 74LS20, and internal layer address name 13 is set to 74LS74 pin address name.
Sheffer stroke gate graphical symbol 21 in described flip-flop operation Experiment of Principle circuit 18 is a signal figure just, the input and output of described Sheffer stroke gate graphical symbol 21 are provided with described plug wire interface 20, the input and output plug wire interface 20 of described Sheffer stroke gate graphical symbol 21 is provided with corresponding address name 19, and the input and output plug wire interface IP address title 19 of described Sheffer stroke gate graphical symbol 21 is corresponding one by one with the plug wire interface IP address title 13 of described chip pad 12; In 18 li, described flip-flop operation Experiment of Principle circuit, the described plug wire interface 20 being connected is between two provided with electrical connection, between the described plug wire interface 20 being connected between two, is provided with described LED light 22.
Trigger graphical symbol 16 in the up counter experimental circuit 15 of described trigger composition is a signal figure just, the input and output of described trigger graphical symbol 16 are provided with described plug wire interface 14, the input and output plug wire interface 14 of described trigger graphical symbol 16 is provided with corresponding address name, and the input and output plug wire interface IP address title of described trigger graphical symbol is corresponding one by one with the plug wire interface IP address title 13 of described chip pad; 15 li of the experimental circuits of the up counter forming at described trigger, the described plug wire interface 14 being connected is between two provided with real electrical connection, between the described plug wire interface 14 being connected between two, is provided with described LED light 17; The Q end output plug wire interface of described trigger graphical symbol 16 is provided with the described LED light 17 that has electrical connection with it.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (2)
1. a trigger Comprehensive Experiment teaching aid, it is characterized in that: the up counter experimental circuit, plug wire interface, LED light, double throw switch and the pulse button switch that include experimental box, DC power supplier, power switch, chip pad, flip-flop operation Experiment of Principle circuit, trigger composition, the panel of described experimental box is provided with at least three double throw switchs and at least one pulse gauge tap, each double throw switch, pulse gauge tap all with the plug wire interface corresponding matching being provided with on experimental box panel; On described experimental box panel, be also provided with up counter experimental circuit and at least one chip pad of flip-flop operation Experiment of Principle circuit, trigger composition; Described chip pad is provided with multiple plug wire interfaces that are printed on name identification; On described flip-flop operation Experiment of Principle circuit, mark has Sheffer stroke gate graphical symbol;
The input and output of described Sheffer stroke gate graphical symbol are equipped with the corresponding plug wire interface being provided with the name identification in chip pad, and described chip pad is corresponding one by one with the plug wire interface name on flip-flop operation Experiment of Principle circuit; And not gate graphical symbol identifies between two plug wire interfaces corresponding to title and realizes electric connection by cable with chip pad; Between the described plug wire interface line being connected between two, be provided with LED light;
In the up counter experimental circuit of described trigger composition, mark has trigger graphical symbol, the input and output of described trigger graphical symbol are equipped with the plug wire interface corresponding with chip pad mark title, and identify between plug wire interface corresponding to title and realize electric connection by cable between trigger graphical symbol and chip pad; The line of the described plug wire interface being connected is between two provided with LED light.
2. trigger Comprehensive Experiment teaching aid as described in claim 1, is characterized in that: in experimental box, be provided with DC power supplier, panel is provided with power switch, and side is provided with power lead; Described power lead is connected with external power source; Described DC power supplier is provided with at least one group of output port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420281480.9U CN203882504U (en) | 2014-05-29 | 2014-05-29 | Trigger comprehensive experimental teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420281480.9U CN203882504U (en) | 2014-05-29 | 2014-05-29 | Trigger comprehensive experimental teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203882504U true CN203882504U (en) | 2014-10-15 |
Family
ID=51682980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420281480.9U Expired - Fee Related CN203882504U (en) | 2014-05-29 | 2014-05-29 | Trigger comprehensive experimental teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203882504U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104599570A (en) * | 2015-01-06 | 2015-05-06 | 深圳市中傲信息技术有限公司 | Circuit simulation system suitable for training and examinations |
-
2014
- 2014-05-29 CN CN201420281480.9U patent/CN203882504U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104599570A (en) * | 2015-01-06 | 2015-05-06 | 深圳市中傲信息技术有限公司 | Circuit simulation system suitable for training and examinations |
| CN104599570B (en) * | 2015-01-06 | 2018-07-03 | 深圳市中傲信息技术有限公司 | A kind of breadboardin system for being suitable for training and examination |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20150529 |
|
| EXPY | Termination of patent right or utility model |