CN201886456U - Portable man-machine interaction device - Google Patents
Portable man-machine interaction device Download PDFInfo
- Publication number
- CN201886456U CN201886456U CN 201020676069 CN201020676069U CN201886456U CN 201886456 U CN201886456 U CN 201886456U CN 201020676069 CN201020676069 CN 201020676069 CN 201020676069 U CN201020676069 U CN 201020676069U CN 201886456 U CN201886456 U CN 201886456U
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- China
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- interaction device
- machine interaction
- led
- control chip
- portable man
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Abstract
The utility model relates to a portable man-machine interaction device which comprises an LED (light-emitting diode) digitron, a keyboard and a control chip. The LED digitron is used for displaying various digits, letters and character information, the keyboard is provided with a plurality of keys and used for implementing various input operations, and the control chip is used for controlling the LED (light-emitting diode) digitron and managing key operations, and connected with the LED (light-emitting diode) digitron and the keys. The portable man-machine interaction device has a simple structure, only needs four data lines to communicate with an external host, adopts a 5V DC (direct current) power supply to supply electricity, and is very suitable to be used in an embedded system. The portable man-machine interaction device formed by HD7279A chips does not need a CPU (central processing unit) to scan, can effectively improve the working efficiency of the CPU, and can omit a complex LED (light-emitting diode) drive circuit to lead the structure to be simple and effective.
Description
Technical field
The utility model relates to a kind of human-computer interaction device.
Background technology
Human-computer interaction technology (Human-Computer Interaction Techniques) is meant by the computing machine Input/Output Device, realizes the technology of people and computer dialog with effective and efficient manner.It comprises that machine provides to the people by output or display device and reaches prompting in a large number for information about and ask for instructions etc., and input reaches prompting and asks for instructions etc. the people for information about to machine by input equipment, and the people answers a question etc. by input equipment to the machine input for information about.Human-computer interaction technology is one of important content in the computer user interface design.Ambits such as it and cognitive science, ergonomics, psychology have close getting in touch.
Human-computer interaction device in the existing embedded system need take more pin in order to use keyboard; In less Single Chip Microcomputer (SCM) system, need to adopt the parallel port extended chip to come the expansion I/O mouth in order to use keyboard; In the conventional LED charactron display circuit, for driving LED or improve power and must the comparatively complicated power amplification circuit of design, also need the real-time scanning LED charactron of software simultaneously, thus waste CPU working time; In the system design that needs man-machine interaction, also need design iterations man-machine interaction circuit usually.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of simple in structure, portable man-machine interaction device of being adapted at using in the embedded system, can effectively improving the CPU work efficiency.
A kind of portable man-machine interaction device comprises:
The LED charactron is in order to show various numerals, letter and character information;
Keyboard with several buttons is in order to carry out various input operations;
Control chip is used for driving LED charactron and management button operation, and control chip is connected with button with the LED charactron respectively.
Preferably, described control chip adopts the HD7279A chip.
Preferably, described LED charactron is 4 LED charactrons.
Preferably, described button is 16.
Preferably, described control chip has four communication interfaces that are used for the external host communication.
Portable man-machine interaction device of the present utility model is simple in structure, only needs four data lines to communicate by letter with external host, and the 5V direct supply is adopted in power supply, is highly suitable in the embedded system and uses.The portable man-machine interaction device that utilizes the HD7279A chip to constitute need not CPU and removes real time scan, can effectively improve the efficient of CPU work, and can save complicated led drive circuit, makes simple for structure efficient.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is a workflow diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, but protection domain of the present utility model is not limited to this.
With reference to Fig. 1, a kind of portable man-machine interaction device comprises:
4 LED charactrons are in order to show various numerals, letter and character information; Keyboard with 16 buttons is in order to carry out various input operations; Control chip is used for driving LED charactron and management button operation, and control chip is connected with button with the LED charactron respectively.
Described control chip adopts the HD7279A chip.Described control chip has four communication interfaces that are used for the external host communication.
With reference to Fig. 2, when the utility model used, control chip carried out initialization earlier, and keyboard scan and LED charactron, when button is imported, then interrupted notice main frame reading of data.When external host has video data to upgrade, then scan LED charactron and update displayed data.
Claims (5)
1. portable man-machine interaction device is characterized in that comprising:
The LED charactron is in order to show various numerals, letter and character information;
Keyboard with several buttons is in order to carry out various input operations;
And control chip, being used for driving LED charactron and management button operation, control chip is connected with button with the LED charactron respectively.
2. portable man-machine interaction device according to claim 1 is characterized in that described control chip adopts the HD7279A chip.
3. portable man-machine interaction device according to claim 1 is characterized in that: described LED charactron is 4 LED charactrons.
4. portable man-machine interaction device according to claim 1 is characterized in that: described button is 16.
5. portable man-machine interaction device according to claim 1 is characterized in that: described control chip has four communication interfaces that are used for the external host communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020676069 CN201886456U (en) | 2010-12-23 | 2010-12-23 | Portable man-machine interaction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020676069 CN201886456U (en) | 2010-12-23 | 2010-12-23 | Portable man-machine interaction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201886456U true CN201886456U (en) | 2011-06-29 |
Family
ID=44184004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020676069 Expired - Fee Related CN201886456U (en) | 2010-12-23 | 2010-12-23 | Portable man-machine interaction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201886456U (en) |
-
2010
- 2010-12-23 CN CN 201020676069 patent/CN201886456U/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: 20110629 Termination date: 20121223 |