LCD1602和74LS164的电路图，还有完全的C语言代码，附加上了仿真原文件。-LCD1602 and the 74LS164 in the schematics, as well as the complete C language code, additional on the simulation of the original document.

51单片机与74LS164连接的原理图，带proteus仿真源文件，c程序源文件。-51 and 74LS164 connection schematic with proteus simulation source files, c program source file.