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结合MCS - 51系列单片机的应用实践 ,讨论了80 51系列单片机串行口扩展的四种应用方式 ,介绍了 4种应用方式的软、硬件设计方法 ,其中着重介绍了多“人工串口”并行输出串行数据的程序设计。实践证明 ,第 4种方法在大屏幕LED点阵显示的应用中取得了良好效果
Based on the application of MCS - 51 MCU, four application modes of serial port expansion of 8051 series MCU are discussed. The software and hardware design methods of four application modes are introduced. The parallel output of “serial port” Serial data programming. Practice has proved that the fourth method in the application of large-screen LED dot matrix display has achieved good results