设计出能放音乐，并且塔上的灯能根据音乐节拍闪动。
Designed to put music, and the tower lights can flash according to the music beat. (2017-04-02, C51, 26225KB, 下载7次)
STC89C52三路超声波工作测距控制舵机，数码管显示（金沙滩），
STC89C52 three-way ultrasonic ranging, digital tube display (Jinshatan) (2017-02-23, C51, 57KB, 下载4次)