In modern times of informational, it has become the one main means that people to gain the information throughing the propaganda medium. In many types’ propaganda medias, entire colored and high-resolution LED large electron display screen has many prominent features which is colorful,.high and adjustable lightness,it can spots,and picture editor. It has been playing an irre
-placeable role. However, lattice display technique is the key techniques.
Lattice LED electronic display in production is simple, in installation is convenient, which is widely used in various public occasions, such as auto-stop device, advertisement screens, as well as bulletin boards. This article describes a kind of used in the duty room and other places outside of the electronic bulletin boards LED lattice display design. Notice the content can be updated at any time to real-time display of temperature and date and time, and has automatic brightness adjustment function. Taking into account the ease of purchase of the required components, this design uses an 8 × 8 lattice LED modules, composed of 16 × 64 LED lattice, showing pending Chinese characters and digital . This design required by the display of Chinese characters, letters and numbers have been achieved, and can control the text and move around and speed. At the same time, temperature and date and time can be real-time display, but unsuccess of online communication with the host computer. Machine system's hardware production is simple and software design is difficult. The system uses a parallel display, and the use of master-slave microcontroller to control the entire system, what can greatly reduce the difficulty of the preparation of software, and easy to achieve the function index.
Key word: LED lattice displayer；MCU；driver circuit
