LED显示屏的实验，与protus仿真，使用的是74HC595为行驱动，47HC154为例驱动，CPU用的是80C51单片机-LED display of the experiment, with protus simulation, using a 74HC595 for line drives, 47HC154 driver as an example, CPU is used in single-chip microcompute

数码管显示，4片47HC595级联程序，可以任意显示-Digital display, four 47HC595 cascade program, could be displayed anything that you wanted.