利用51单片机串行口，在结合74LS164为驱动的数码管串口显示。主要实现顺序移动。-use SCM serial port, in the context of 74LS164-driven serial digital control display. Main sequence mobile.

51单片机通过74164扩展串口驱动4位led显示（含sch图和源程序）-51 through 74164 microcontroller serial expansion drive led four shows (including sch map and the source)

at89c51仿真的文件，74ls164串转并的仿真程序，程序非常小，非常实用-AT89C51 simulation file, 74ls164 string transfer and the simulation program, the program is very small, very useful