CN203812532U - LED lattice Chinese character display screen - Google Patents
LED lattice Chinese character display screen Download PDFInfo
- Publication number
- CN203812532U CN203812532U CN201420101028.XU CN201420101028U CN203812532U CN 203812532 U CN203812532 U CN 203812532U CN 201420101028 U CN201420101028 U CN 201420101028U CN 203812532 U CN203812532 U CN 203812532U
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- led
- control processor
- display screen
- chinese character
- driver element
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Abstract
The utility model relates to an LED lattice Chinese character display screen. The LED lattice Chinese character display screen comprises a control processor, a decoding selection unit, a latching drive unit, an SCI communication unit, a power circuit unit and an LED display screen; the control processor is connected with the decoding selection unit so as to carry out decoding selection of LED row lines; the control processor is connected with the latching drive unit so as to carry out driving input of LED column lines; the decoding selection unit and the latching drive unit are respectively connected with the LED display screen; the control processor is connected with the SCI communication unit to carry out serial communication; and the power circuit unit provides DC working voltage and supplies the control processor, the latching drive unit, the decoding selection unit, the SCI communication unit and the LED display screen with power. The LED lattice Chinese character display screen is low in power consumption, low in cost, stable in function and easy to maintain and implement, and can be suitable for indoor and outdoor Chinese character display.
Description
Technical field
The utility model relates to a kind of display screen, refers in particular to a kind of low-power consumption, and low cost is easy to safeguard, and realizes simply the LED dot matrix Chinese character display screen of function-stable.
Background technology
Along with the progressively development of electronic technology, LED dot matrix display screen obtains studying more and more widely in recent years.LED dot matrix display screen be the extraction of chinese character pattern that will show by PC out, and send to single-chip microcomputer, be then presented on dot matrix screen, be mainly applicable to indoor and outdoor Chinese character and show.And current LED dot matrix display screen cost is higher, realize complexity, failure rate is higher.For this reason, we have researched and developed a kind of low-power consumption, and low cost is easy to safeguard, and realizes simply the LED dot matrix Chinese character display screen of function-stable.
utility model content
The utility model object is that a kind of low-power consumption is provided in order to overcome the deficiencies in the prior art, and low cost is easy to safeguard, and realizes simply the LED dot matrix Chinese character display screen of function-stable.
For achieving the above object, the technical solution adopted in the utility model is: a kind of LED dot matrix Chinese character display screen, comprises control processor, decoding selected cell, latch driver element, SCI communication unit, power circuit unit, LED display; Described control processor carries out the decoding of LED line and selects after being connected with decoding selected cell; Described control processor carries out the input of LED column line drive after being connected with latch driver element; Described decoding selected cell, latch driver element are connected with LED display respectively; After being connected of described control processor and SCI communication unit, carry out serial communication; Described power circuit provides direct-current working volts, and is respectively control processor, latch driver element, decoding selected cell, SCI communication unit, LED display power supply.
Preferably, described control processor is selected M68HC908JL8 chip.
Preferably, described decoding selected cell is the circuit being made up of four or six code translator 74LS154 chips.
Preferably, the described latch driver element circuit of the 8 bit shift register 74HC595 chips compositions with latch output of serving as reasons.
Preferably, described SCI communication unit is the circuit being made up of MAX232 chip.
Preferably, PTA0 (the KBI0)-PTA3 (KBI3) of the M68HC908JL8 chip of described control processor and the input port A of decoding selected cell, B, C, carries out the decoding of LED line and selects after D is connected; PTB0 (the ADC0)-PTB2 (ADC2) of the M68HC908JL8 chip of described control processor and the input port SER of latch driver element, SRCLK, carries out the input of LED column line drive after RCLK is connected; Described decoding selected cell, latch driver element are connected with LED display respectively; The PTD6 (TXD) of the M68HC908JL8 chip of described control processor, the TXD of PTD7 (RXD) and SCI communication unit, carries out serial communication after RXD is connected; Described power circuit provides direct-current working volts DC5V, and is respectively M68HC908JL8 chip, latch driver element, decoding selected cell, SCI communication unit, the LED display power supply of control processor.
Due to the utilization of technique scheme, the utility model compared with prior art has following advantages:
LED dot matrix Chinese character display screen described in the utility model, receive the Chinese character font information being sent by PC by SCI communication unit, the M68HC908JL8 chip of described control processor is controlled respectively decoding selected cell, latch driver element carries out LED line, the input of LED alignment to LED display, is finally presented in LED display; The utility model low-power consumption, low cost, is easy to safeguard, and realizes simply, function-stable goes for indoor and outdoor Chinese character and shows.
Brief description of the drawings
Below in conjunction with accompanying drawing, technical solutions of the utility model are described further:
Accompanying drawing 1 is the theory diagram of LED dot matrix Chinese character display screen described in the utility model;
Wherein: 1, control processor; 2, decoding selected cell; 3, latch driver element; 4, SCI communication unit; 5, power circuit unit.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Accompanying drawing 1 is LED dot matrix Chinese character display screen described in the utility model, comprises control processor 1, decoding selected cell 2, latch driver element 3, SCI communication unit 4, power circuit unit 5 and LED display (not shown); Described control processor 1 is selected M68HC908JL8 chip; Described decoding selected cell 2 is the circuit being made up of four or six code translator 74LS154 chips; The serve as reasons circuit of the 8 bit shift register 74HC595 chips compositions with latch output of described latch driver element 3; The circuit of described SCI communication unit 4 for being formed by MAX232 chip; PTA0 (the KBI0)-PTA3 (KBI3) of the M68HC908JL8 chip of described control processor 1 and the input port A of decoding selected cell 2, B, C, carries out the decoding of LED line and selects after D is connected; PTB0 (the ADC0)-PTB2 (ADC2) of the M68HC908JL8 chip of described control processor 1 and the input port SER of latch driver element 3, SRCLK, carries out the input of LED column line drive after RCLK is connected; Described decoding selected cell 2, latch driver element 3 are connected with LED display respectively; The PTD6 (TXD) of the M68HC908JL8 chip of described control processor 1, the TXD of PTD7 (RXD) and SCI communication unit 4, carries out serial communication after RXD is connected; Described power circuit 5 provides direct-current working volts DC5V, and is respectively M68HC908JL8 chip, latch driver element 3, decoding selected cell 2, SCI communication unit 4, the LED display power supply of control processor 1.
Principle of work of the present utility model is: after the M68HC908JL8 chip of control processor 1 is set, receive the Chinese character font information being sent by PC by SCI communication unit 4, the M68HC908JL8 chip of described control processor 1 is controlled respectively decoding selected cell 2, latch driver element 3 carries out LED line, the input of LED alignment to LED display, is finally presented in LED display.
The utility model low-power consumption, low cost, is easy to safeguard, and realizes simply, function-stable goes for indoor and outdoor Chinese character and shows.
Below be only concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, within all dropping on the utility model rights protection scope.
Claims (6)
1. a LED dot matrix Chinese character display screen, is characterized in that: comprise control processor, decoding selected cell, latch driver element, SCI communication unit, power circuit unit, LED display; Described control processor carries out the decoding of LED line and selects after being connected with decoding selected cell; Described control processor carries out the input of LED column line drive after being connected with latch driver element; Described decoding selected cell, latch driver element are connected with LED display respectively; After being connected of described control processor and SCI communication unit, carry out serial communication; Described power circuit provides direct-current working volts, and is respectively control processor, latch driver element, decoding selected cell, SCI communication unit, LED display power supply.
2. LED dot matrix Chinese character display screen according to claim 1, is characterized in that: described control processor is selected M68HC908JL8 chip.
3. LED dot matrix Chinese character display screen according to claim 2, is characterized in that: described decoding selected cell is the circuit being made up of four or six code translator 74LS154 chips.
4. LED dot matrix Chinese character display screen according to claim 3, is characterized in that: the serve as reasons circuit of the 8 bit shift register 74HC595 chips compositions with latch output of described latch driver element.
5. LED dot matrix Chinese character display screen according to claim 4, is characterized in that: described SCI communication unit is the circuit being made up of MAX232 chip.
6. LED dot matrix Chinese character display screen according to claim 5, it is characterized in that: PTA0 (the KBI0)-PTA3 (KBI3) of the M68HC908JL8 chip of described control processor and the input port A of decoding selected cell, B, C, carries out the decoding of LED line and selects after D is connected; PTB0 (the ADC0)-PTB2 (ADC2) of the M68HC908JL8 chip of described control processor and the input port SER of latch driver element, SRCLK, carries out the input of LED column line drive after RCLK is connected; Described decoding selected cell, latch driver element are connected with LED display respectively; The PTD6 (TXD) of the M68HC908JL8 chip of described control processor, the TXD of PTD7 (RXD) and SCI communication unit, carries out serial communication after RXD is connected; Described power circuit provides direct-current working volts DC5V, and is respectively M68HC908JL8 chip, latch driver element, decoding selected cell, SCI communication unit, the LED display power supply of control processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420101028.XU CN203812532U (en) | 2014-03-07 | 2014-03-07 | LED lattice Chinese character display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420101028.XU CN203812532U (en) | 2014-03-07 | 2014-03-07 | LED lattice Chinese character display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203812532U true CN203812532U (en) | 2014-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420101028.XU Expired - Fee Related CN203812532U (en) | 2014-03-07 | 2014-03-07 | LED lattice Chinese character display screen |
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| Country | Link |
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| CN (1) | CN203812532U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915062A (en) * | 2014-03-07 | 2014-07-09 | 苏州市职业大学 | LED dot matrix Chinese character display screen |
-
2014
- 2014-03-07 CN CN201420101028.XU patent/CN203812532U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915062A (en) * | 2014-03-07 | 2014-07-09 | 苏州市职业大学 | LED dot matrix Chinese character display screen |
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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: 20140903 Termination date: 20150307 |
|
| EXPY | Termination of patent right or utility model |