CN203590207U - Matrix keyboard - Google Patents
Matrix keyboard Download PDFInfo
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- CN203590207U CN203590207U CN201320784475.5U CN201320784475U CN203590207U CN 203590207 U CN203590207 U CN 203590207U CN 201320784475 U CN201320784475 U CN 201320784475U CN 203590207 U CN203590207 U CN 203590207U
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Abstract
The utility model discloses a matrix keyboard, which comprises m-numbered row wires, m-numbered ground wires and n-numbered column wires, wherein the row wires and the column wires are used for connecting output key values of the ground wires; the matrix keyboard further comprises m*n independent keys, which are used for grounding the row wires and the column wires corresponding to intersections. According to the matrix keyboard, each key in the matrix keyboard corresponds to a unique coded value, the key value can be directly output, and which key outputs the key value can be determined, thus the scanning can be avoided; and the matrix keyboard is easy to learn, is high in sensitivity, is fully functional, is high in precision, saves energy, is convenient to use, is low-carbon and environmentally friendly, has long service life and the like.
Description
Technical field
The utility model relates to a kind of matrix keyboard.
Background technology
Matrix keyboard, as a kind of control button, has obtained general application in teaching and in producing.Matrix keyboard of the prior art, has independently button, realizes key value must export by scanning.Its weak point is mainly: program complexity, understand difficulty, and carry out occupying system resources, relatively there is certain time delay, increased study and the complexity of using.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of easy to learn, highly sensitive, more accurate, the high matrix keyboard of utilance of system resource.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of matrix keyboard comprises m root line and ground wire, n root alignment, and described line, alignment are for connecting the output key value of ground wire; In described matrix keyboard, also comprise m*n independent button, for by the ranks line ground connection in corresponding crosspoint.
As the further improvement of technique scheme:
On described matrix keyboard, be also provided with and control its power on/off switch, diode displaying break-make situation, the electric current of light-emitting diode is flow through in resistance control.
As the further improvement of technique scheme:
On each power supply branch road of described matrix keyboard, be equipped with the 10k resistance for reducing inflow current.
In the utility model, encoded radio corresponding to the each button of matrix keyboard is unique, directly output key value, determine it is which button, thereby avoid scanning, there is easy to learn, highly sensitive, perfect in shape and function, accuracy is high, energy-conservation, easy to use, the advantages such as low-carbon environment-friendly and long service life.By ground wire, well each key value is encoded out, improved service efficiency, also improved the utilization ratio of system resource.The matrix keyboard of this utility model is suitable for the making of the study of all schools and the electronic product of Electronic Products Corporation.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the utility model matrix keyboard structural representation.
Fig. 2 is the utility model matrix keyboard button theory diagram.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection range of the present utility model is made to more explicit defining.
As shown in Figure 1, a kind of matrix keyboard of the present embodiment comprises m root line (102) and ground wire (103), n root alignment (105), described line (102), alignment (105) are for connecting the output key value of ground wire (103), in order to solve the technical problem described in background technology, the technical solution of the utility model is, in described matrix keyboard, also comprise m*n independent button (101), as shown in Figure 2, described independent button (101) comprises three pins, be respectively and connect line pin (201), earth connection pin (202) and connect alignment pin (203), while pressing the low layer band sheet metal button (204) of pin top, the sheet metal of button low side connects three pins, pin connects together, the ranks line ground connection in corresponding crosspoint, form and connect contact (104).
Adopt after this kind of technical scheme, the encoded radio that each button is corresponding is unique, better realized the function of original matrix keyboard, directly output key value, determine it is which button, thereby avoid scanning, on the Demand Base that meets user, simpler while making to write a program, simultaneously more accurately with sensitiveer.
Embodiment 1
In the present embodiment, on described matrix keyboard, be also provided with and control its power on/off switch (110), ON/OFF matrix keyboard is connected with the circuit of 5V power line (107), so that more energy-conserving and environment-protective, and use light-emitting diode (111) to show, adopt resistance (109) to control the electric current that flows through light-emitting diode.
Embodiment 2
In the present embodiment, on each power supply branch road of described matrix keyboard, be equipped with 10k resistance (108), for reducing to flow into the electric current of single-chip microcomputer.Excessive electric current can burn Single Chip Microcomputer (SCM) system, has so both avoided dangerous, has reduced power consumption simultaneously.
The foregoing is only preferred implementation of the present utility model, protection range of the present utility model is not limited in above-mentioned execution mode, and every technical scheme that belongs to the utility model principle all belongs to protection range of the present utility model.For a person skilled in the art, some improvements and modifications of carrying out under the prerequisite that does not depart from principle of the present utility model, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (3)
1. matrix keyboard comprises m root line and a ground wire, n root alignment, and described line, alignment, for connecting the output key value of ground wire, is characterized in that: in described matrix keyboard, also comprise m*n independent button, for by the ranks line ground connection in corresponding crosspoint.
2. matrix keyboard according to claim 1, is characterized in that: on described matrix keyboard, is also provided with and controls its power on/off switch, and diode displaying break-make situation, the electric current of light-emitting diode is flow through in resistance control.
3. matrix keyboard according to claim 1 and 2, is characterized in that: on each power supply branch road of described matrix keyboard, be equipped with the 10k resistance for reducing inflow current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320784475.5U CN203590207U (en) | 2013-11-25 | 2013-11-25 | Matrix keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320784475.5U CN203590207U (en) | 2013-11-25 | 2013-11-25 | Matrix keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203590207U true CN203590207U (en) | 2014-05-07 |
Family
ID=50588052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320784475.5U Expired - Fee Related CN203590207U (en) | 2013-11-25 | 2013-11-25 | Matrix keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203590207U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698938A (en) * | 2015-03-07 | 2015-06-10 | 孙建波 | Scanning-free matrix keyboard |
| CN105680873A (en) * | 2016-01-05 | 2016-06-15 | 湖南工业大学 | Independent keyboard scanning and encoding circuit |
-
2013
- 2013-11-25 CN CN201320784475.5U patent/CN203590207U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698938A (en) * | 2015-03-07 | 2015-06-10 | 孙建波 | Scanning-free matrix keyboard |
| CN105680873A (en) * | 2016-01-05 | 2016-06-15 | 湖南工业大学 | Independent keyboard scanning and encoding circuit |
| CN105680873B (en) * | 2016-01-05 | 2018-06-26 | 湖南工业大学 | Independent keyboard scanning encoding circuit |
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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: 20140507 Termination date: 20151125 |