Design And Realization Of LED Display Board And Control Panel

LED display board is a kind of board by controlling of semiconductor diode off and on, which can be used to display graphics, images, texts, animation, video and other information. Today, the information increase like explore, LED display The applications of LED display has an unprecedented development, from street large advertising screens to elegant LED lights in our rooms, and even some electrical products like watches, mobile phones and computers also widely used with LED display. They full of our lives; they also decorate and connect with every aspect of our lives.LED display control card, also known as the LED display control system and LED display controller, it is the core device which composed of LED display board, mainly used to receiving screen and display information from the computer serial port, then it put information into memory and produce the display data and control timing which can be identified by LED display board.In this article, writer designed and implemented the LED display control card based on LPC1765 ARM chip, and debugged some features such as ranks of the rolling and realization of Chinese characters.ARM chip has many advantages as a core component of the control card, this paper first analyzed the choose of chips, then designed the various modules required of features implementation, such as the signal line control, and column control, serial port and interrupt system, and completed the production of physical card, in final, I wrote, compiled and debugged the program based on Keil MDK, the effect is quite satisfactory.