基于STC89C54RD+单片机的点阵LED显示屏的设计

Design of Dot-matrix LED Display Screen Based on STC89C54RD+MCU

以单片机系统组成的点阵LED显示屏开发过程.系统采用上—下位机的结构构建,上位机PC可通过串行通信接口实现对下位机LED显示系统显示参数的设定.下位机以LED屏的显示电路和单片机控制电路为核心,实现点阵LED屏以多样化的方式显示各种信息的功能,同时可实现本地温度采集、显示和本地时间实时显示的功能.

The design,the developing method and process of the dot-matrix LED display system based of STC89C54RD ＋ MCU are described. The main content is that the design procedure of the dot - matrix LED display screen. The system is built on the structure of the upper and lower machine. According to the serial communication interface, the upper machine acted by the computer can set the display parameter of the lower machine acted by the LED display system. The core of the lower machine is the diplay circuit of the display screen and the controlled circuit of the MCU. The lower machine can perform the function of the various infor-mational displays under various modes. At the same time, it can sample the local temperature and display the local temperature and the real time.