CN201927356U - Music player - Google Patents
Music player Download PDFInfo
- Publication number
- CN201927356U CN201927356U CN2010206628454U CN201020662845U CN201927356U CN 201927356 U CN201927356 U CN 201927356U CN 2010206628454 U CN2010206628454 U CN 2010206628454U CN 201020662845 U CN201020662845 U CN 201020662845U CN 201927356 U CN201927356 U CN 201927356U
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- China
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- power amplifier
- frequency power
- audio
- music player
- audio frequency
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Abstract
The utility model provides a music player which consists of an STC 89C 52 single chip, an LED (light emitting diode) display module and a power amplifier module, wherein the input ends of the LED display module and the power amplifier module are respectively connected with the output end of the STC 89C 52 single chip, the power amplifier module comprises an LM 386 audio frequency power amplifier and a loudspeaker, the LM 386 audio frequency power amplifier is connected with the positive pole and the negative pole of a power supply, a first output end of the LM 386 audio frequency power amplifier is connected with the loudspeaker, the second output end of the LM 386 audio frequency power amplifier is connected with a capacitor and the input end of the capacitor through a resistor, and the third output end of the LM 386 audio frequency power amplifier is grounded. The music player has the beneficial effects that double line stroke operation is realized theoretically by utilizing the 51 single chip, so that the music player can play music and can display lyrics simultaneously, thus having simple realizing method.
Description
Technical field
The utility model belongs to technical field of electronic equipment, relates to a kind of music player.
Background technology
For a long time, based on the design of 51 single-chip microcomputers all is that basic function with 51 single-chip microcomputers is the single-threaded work in basis, and the similar music player of being done all is or can only playing back music, or is first playing back music, and then realize other functions, can't realize synchronously.This is not deviser's a problem, but limit by the function of 51 single-chip microcomputers, and 51 single-chip microcomputers itself are exactly single-threaded work, can only move a program simultaneously, so its application reduces greatly.
Summary of the invention
The purpose of this utility model provides a kind of music player, and having solved in the prior art can't be with 51 chip microcontroller playing back music and show the problem of the lyrics simultaneously.
The technical scheme that the utility model adopted is: a kind of music player, to form by STC89C52 single-chip microcomputer, LED display module and power amplifier module, and the input end of LED display module and power amplifier module is connected with the output terminal of STC89C52 single-chip microcomputer respectively; Power amplifier module comprises LM386 audio-frequency power amplifier and loudspeaker, the LM386 audio-frequency power amplifier is connected with negative pole with positive source respectively, first output terminal of LM386 audio-frequency power amplifier is connected with loudspeaker, second output terminal of LM386 audio-frequency power amplifier is connected with its input end with electric capacity by resistance, the 3rd output head grounding of LM386 audio-frequency power amplifier.
The beneficial effects of the utility model are: with 51 chip microcontroller the work of theoretic two-wire journey, make the music player not only can playing back music but also can synchronously displaying lyrics, implementation method is simple.
Description of drawings
Fig. 1 structured flowchart of the present utility model;
The structural representation of Fig. 2 the utility model power amplifier module.
1. STC89C52 single-chip microcomputer, 2.LED display module, 3. power amplifier module, 4. LM386 audio-frequency power amplifier, 5. loudspeaker, R. resistance, C. electric capacity.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
As shown in Figure 1, the utility model provides a kind of music player, is made up of STC89C52 single-chip microcomputer 1, LED display module 2 and power amplifier module 3, and the input end of LED display module 2 and power amplifier module 3 is connected with the output terminal of STC89C52 single-chip microcomputer 1 respectively.What LED display module 2 adopted is 1602 models.
As shown in Figure 2, power amplifier module 3 comprises LM386 audio-frequency power amplifier 4 and loudspeaker 5, LM386 audio-frequency power amplifier 4 is connected with negative pole with positive source respectively, first output terminal of LM386 audio-frequency power amplifier 4 is connected with loudspeaker 5, second output terminal of LM386 audio-frequency power amplifier 4 is connected with its input end with capacitor C by resistance R, the 3rd output head grounding of LM386 audio-frequency power amplifier 4.The purpose that resistance R and capacitor C are set is voltage gain can be adjusted to arbitrary value.
Concrete structure is: LED display module 2 input ends link to each other with the P2.0-P2.7 mouth of STC89C52 single-chip microcomputer 1, and the input end of LM386 audio-frequency power amplifier 4 links to each other with the P1.1 mouth of STC89C52 single-chip microcomputer 1.The gain amplifier of LM386 audio-frequency power amplifier 4 is 50 times.
Claims (1)
1. music player, it is characterized in that: be made up of STC89C52 single-chip microcomputer (1), LED display module (2) and power amplifier module (3), the input end of LED display module (2) and power amplifier module (3) is connected with the output terminal of STC89C52 single-chip microcomputer (1) respectively; Power amplifier module (3) comprises LM386 audio-frequency power amplifier (4) and loudspeaker (5), LM386 audio-frequency power amplifier (4) is connected with negative pole with positive source respectively, first output terminal of LM386 audio-frequency power amplifier (4) is connected with loudspeaker (5), second output terminal of LM386 audio-frequency power amplifier (4) is connected the 3rd output head grounding of LM386 audio-frequency power amplifier (4) by resistance (R) with its input end with electric capacity (C).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206628454U CN201927356U (en) | 2010-12-16 | 2010-12-16 | Music player |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206628454U CN201927356U (en) | 2010-12-16 | 2010-12-16 | Music player |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201927356U true CN201927356U (en) | 2011-08-10 |
Family
ID=44431194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206628454U Expired - Fee Related CN201927356U (en) | 2010-12-16 | 2010-12-16 | Music player |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201927356U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106297754A (en) * | 2015-05-20 | 2017-01-04 | 中国计量学院 | Multifunctional single-chip music box |
-
2010
- 2010-12-16 CN CN2010206628454U patent/CN201927356U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106297754A (en) * | 2015-05-20 | 2017-01-04 | 中国计量学院 | Multifunctional single-chip music box |
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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: 20110810 Termination date: 20111216 |