CN201498112U - Eight-channel LED dot matrix display screen responder - Google Patents
Eight-channel LED dot matrix display screen responder Download PDFInfo
- Publication number
- CN201498112U CN201498112U CN2009202263167U CN200920226316U CN201498112U CN 201498112 U CN201498112 U CN 201498112U CN 2009202263167 U CN2009202263167 U CN 2009202263167U CN 200920226316 U CN200920226316 U CN 200920226316U CN 201498112 U CN201498112 U CN 201498112U
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- dot matrix
- responder
- matrix display
- question
- chip microcomputer
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Abstract
The utility model relates to a responder, particularly to an eight-channel LED dot matrix display screen responder. The technical scheme is as follows: the responder mainly comprises a plurality of responder function keys, AT89C51 single chip microcomputer, a dot matrix display, a driving chip and an audio power amplification circuit, wherein the input terminal of the AT89C51 single chip microcomputer is connected with the plurality of responder function keys, the P0 port of the output terminal of the AT89C51 single chip microcomputer is used as the line output and connected with the dot matrix display through the driving chip, the P2 port of the output terminal of the AT89C51 single chip microcomputer is used as the row output and connected with the dot matrix display, and the P3.1 port of the output terminal of the AT89C51 single chip microcomputer is connected with the audio power amplification circuit. The eight-channel LED dot matrix display screen responder has the benefits that the responder is more beautiful and individual when compared with the prior responder with the digital tube display, has a certain extension space, can change the related display parameters and functions by regulating the software content without needing to change the hardware circuit, and has stronger practicability.
Description
One, technical field:
The utility model relates to a kind of question-and-answer game apparatus, particularly a kind of eight paths of LEDs dot matrix display screen question-and-answer game apparatus.
Two, background technology:
The design and fabrication method of question-and-answer game apparatus can both be seen at a lot of electrical type medium, traditional question-and-answer game apparatus is used a plurality of D-latchs more, impact damper, compositions such as 555 timers, can realize the function of racing to be the first to answer a question of multichannel, but the majority circuit design is all too complicated, is difficult for making successfully, and seldom has expanded function.And expanded function social most important for our this information fast development.The present design circuit is simple, and the function practicality is easy to realize.Question-and-answer game apparatus is made up of single-chip microcomputer and peripheral circuit, owing to adopt single-chip microcomputer, make peripheral circuit very simple, but function is few unlike general question-and-answer game apparatus.
Three, summary of the invention:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, a kind of eight paths of LEDs dot matrix display screen question-and-answer game apparatus are provided, this question-and-answer game apparatus not only can be realized eight tunnel functions of racing to be the first to answer a question, and can realize the conversion of numeral, letter and figure, and racing to be the first to answer a question of multichannel brings convenience in order to expand more from now on owing to used single-chip microcomputer.
Its technical scheme is mainly to form by racing to be the first to answer a question function key, AT89C51 single-chip microcomputer, matrix display, chip for driving and audio power amplifier circuit, the input end of described AT89C51 single-chip microcomputer connects a plurality of function keys of racing to be the first to answer a question, the P0 mouth of output terminal is as line output, and connect matrix display by chip for driving, the P2 mouth of output terminal is as row output connection battle array display, and the P3.1 of output terminal output connects audio power amplifier circuit.
Above-mentioned chip for driving adopts 74LS245 to drive as the LED dot matrix.
Above-mentioned audio power amplifier circuit adopts the LM386 module.
The beneficial effects of the utility model are: the question-and-answer game apparatus that shows with charactron showed more attractive in appearance more in the past, more humane, and have certain extending space, need not to change hardware circuit, only need to adjust software content and can change relevant display parameter and function, practicality is stronger.
Four, description of drawings:
Accompanying drawing 1 is a schematic block circuit diagram of the present utility model;
Accompanying drawing 2 is circuit diagrams of the present utility model.
Five, embodiment:
Below in conjunction with accompanying drawing 1-2, the utility model will be further described:
Its technical scheme is mainly to form by racing to be the first to answer a question function key, AT89C51 single-chip microcomputer, matrix display, chip for driving and audio power amplifier circuit, the input end of described AT89C51 single-chip microcomputer connects a plurality of function keys of racing to be the first to answer a question, the P0 mouth of output terminal is as line output, and connect matrix display by chip for driving, the P2 mouth of output terminal is as row output connection battle array display, the P3.1 output of output terminal connects audio power amplifier circuit, chip for driving adopts 74LS245 to drive as the LED dot matrix, and audio power amplifier circuit adopts the LM386 module.
Drive as the LED dot matrix with a 74LS245.The P0 mouth of AT89C51 single-chip microcomputer is as line output, and the P2 mouth is as row output.Race to be the first to answer a question button for eight and insert the P1 mouth, S0 is the circuit reset key, and S2 is for beginning to race to be the first to answer a question key, " S0_ mistake ", and " S1_ is correct " all adopts low level effective for demonstration answer key.P3.1 output 1KHZ frequency square wave drives with audio frequency power amplifier module LM386, regulates gain-variable resistance R V1 and can obtain suitable resonant, and prompting is raced to be the first to answer a question button and is pressed.The P3.2 pin is the display mode control bit, in order to be suitable for different occasions.Noble potential shows letter, and electronegative potential is display digit then.
During use, race to be the first to answer a question key and press, data are sent to single-chip microcomputer, and single-chip microcomputer is sent to dot matrix with data by chip for driving again, and after this dot matrix display graphics and driving audio power amplifier circuit are started working.
Race to be the first to answer a question process: circuit enters ready state, and wait is raced to be the first to answer a question.After order was raced to be the first to answer a question in host's issue, if there is the people to push button, it was who presses at first that program is judged, from the segment encode value of the P1.0～P1.7 output person of racing to be the first to answer a question number, drive then, send dot matrix to show through 74LM245, and block keyboard, forbid the input of other people button, thereby realize racing to be the first to answer a question function.When answer was correct, dot matrix showed a lovely smiling face; During erroneous answers, dot matrix shows the dejected face of crying.The design of this smiling face and the face of crying is that most of products all do not have, and this is another bright spot of our this design just.In the time will racing to be the first to answer a question next time, press reset key earlier by the host, circuit reset enters and races to be the first to answer a question ready state next time.And after racing to be the first to answer a question, be attended by buzzer at every turn.
Claims (3)
1. paths of LEDs dot matrix display screen question-and-answer game apparatus, it is characterized in that: mainly form by racing to be the first to answer a question function key, AT89C51 single-chip microcomputer, matrix display, chip for driving and audio power amplifier circuit, the input end of described AT89C51 single-chip microcomputer connects a plurality of function keys of racing to be the first to answer a question, the P0 mouth of output terminal is as line output, and connect matrix display by chip for driving, the P2 mouth of output terminal is as row output connection battle array display, and the P3.1 of output terminal output connects audio power amplifier circuit.
2. eight paths of LEDs dot matrix display screen question-and-answer game apparatus according to claim 1 is characterized in that: described chip for driving adopts 74LS245 to drive as the LED dot matrix.
3. eight paths of LEDs dot matrix display screen question-and-answer game apparatus according to claim 1 is characterized in that: described audio power amplifier circuit adopts the LM386 module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202263167U CN201498112U (en) | 2009-09-11 | 2009-09-11 | Eight-channel LED dot matrix display screen responder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202263167U CN201498112U (en) | 2009-09-11 | 2009-09-11 | Eight-channel LED dot matrix display screen responder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201498112U true CN201498112U (en) | 2010-06-02 |
Family
ID=42441314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202263167U Expired - Fee Related CN201498112U (en) | 2009-09-11 | 2009-09-11 | Eight-channel LED dot matrix display screen responder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201498112U (en) |
-
2009
- 2009-09-11 CN CN2009202263167U patent/CN201498112U/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: 20100602 Termination date: 20100911 |