The composition of LED dot matrix display
Led lattice display is composed of several led light-emitting diodes packaged together, is a new display parts. In order to illustrate the principle of LED dot matrix display and MCU as the control core, a display system containing both hardware and software is designed and fabricated. The circuit through the key control can realize any number of Chinese characters of the shutter, up and left shift, and many other display forms, can be widely used in airports, shopping malls, hospitals and other public places in the text advertising publicity, information release and so on. Moreover, it has the characteristics of small size, simple circuit structure and easy realization.
System hardware Circuit
The hardware circuit of the display controller consists of three parts: Serial communication interface, expansion of external memory and led lattice display driver and interface circuit.
System software program
Software program is the core part of the whole control system. After the system main program begins, the system environment is initialized first, including setting up serial port, timer, interrupt and port. The whole software design is mainly divided into two parts: Display part and communication part.
