Desigen and Realization of the Lattice Screen of LED Based on MCS-51
Abstract: This paper introduces a design of the LED lattice display system base on MCU AT89S51. The system can display in both Chinese and English characters of the show and from top to bottom and move around the magic show. And can be cascaded to expand the screen size to achieve increased content purposes. The PC sends control commands and displays code to microcontroller, AT89S51 receives control commands from PC and shows the code, Driver module drives a 16×16-resolution LED lattice LED’s panel display scan showed. Communication between PC and the microcontroller using RS-232C communications standards. the characteristics that AT89S51 microcontroller is cheap and could be coded conveniently makes the whole system Convenient to Maintenance and Repair. In addition, the system will take up only a small amount of the MCU I/O and memory,so that the system has functional space for expansion.
Key words: AT89S51, lattice LED’s panel display, serial communication