Dot-matrix Display

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Dot-matrix Display can be used in many aspects,like:

Display in subway station;

display in bank,supermarket,school;

information board in hospital;

automotive advertising screen;

electric gate information screen and so on.

Products in photo album are part of main products in my company.And we also can

manufacture other model according to the requirements from customers.

Looking forward to your inquiry!

Q: Using proteus simulation to do LED dot matrix screen clock, the time is not real, seven or eight seconds, seconds before jumping, CPU overload, how can I solve?: Hardware and software need to match...Increase the speed of CPU;The software must exclude invalid actions.

Q: I used two pieces of 164 to light 8*8LED, dynamic scanning, the bright part of the light, the light should not be bright, please ask the teacher is the circuit problem or program problems? Because how to solve? Thank you: Is a procedural problem, this phenomenon is commonly known as ghosting,

Q: How to lighten LED dot matrix in full screen: Just change the direction of the control card data

Q: I bought a 16X64 LED lattice screen to learn microcontroller, now encountered a problem is how to realize the LED lattice left scrolling LED dot matrix is Chinese characters, I used 8 74HC595 as the column driver, a 74HC154 line scan, the heroes who have no reference to the younger program reference, is used the compilation of the: As the left only a scraper with 154 implementation, your hardware does not allow you to move around, can move up or down, unless shuabing. Why use 154, and then 2, 595 not good

Q: Where is the difference between a LED dot matrix screen and an ordinary LED display?: At present, LED dot matrix screen will be phased out, and the price is low, the quality is not very good. The main reason is that the LED dot matrix module does not meet the requirements in many ways.

Q: I would like to ask 24 feet of two-color LED dot matrix working principle and circuit diagram: Column scan line. 8 feet of the 8 lines line access on a chip, such as 2003, the other 8 listed above the line to 8 feet into a chip, such as 595, so that line the first line when line is high, and the first column of the line is low, then there is the first line of the first column of the lamp light. Then the next line continues to be high, the line is changed into second columns is low, is the first line of the second column of the lights. Similarly, when line second line on the behavior of high level, the first column is low, so that the light is the first rows of second light. This is equivalent to using coordinates to lock the meaning of a light, which is bright when you want to make the software.

Q: Ask God for help, SCM can directly drive LED dot matrix? If not, what about the drive circuit? Can you give me a map?: If you are using STC 5V51 Series MCU, the maximum input current is 120 mA, is basically up about half. A mouth, a mouth, the output must be strong pull, the input current, but if so, the microcontroller will be in a relatively limited state, and brightness will receive some impact. If you don't light up a lot, it's not necessarily bad.

Q: I have a smile LED dot matrix screen, is the reality of man kind, composed of small pieces of a total of 32 fast to form a dot matrix LED screen is welded on the circuit board, the circuit board at both ends of each of a 16 pin interface is the LED lattice screen should buy what kind of driver to control it? Thank you: Are you the only one?. The 32 dot matrix is a unit board.Depends on how much you 74HC595 chip unit board, 16 monochrome, can do text screen for onbon t-card on the line, to 50 yuan. Software works well.

Q: What is the difference between dot matrix LED display and DIP and SMD?: Dot matrix LED display is suitable for indoor text and simple images broadcast form, due to the use of the dot matrix module, have great limitations in brightness, degree of protection and service life, display display market will gradually fade.

Q: This is my modern electronic design topic, need to use the digital electronic technology knowledge to do, cannot use the monolithic integrated circuit or the PC machine. I hope you can tell me which chips and what devices to use, and so I'd like to tell you the whole idea. thank you very much indeed: Of course, 74164, 74164 for the 8 bit serial and out shift register. When the clearing terminal (CLR) is low, the output (QA-QH) is low.

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