基于STC89c51单片机的智能循迹小车，通过传感器对黑线的识别，是小车始终沿轨迹前行，并能实现转弯和数码管的实时显示。-STC89c51 MCU-based smart tracking car , through the sensors to identify on the black line is the car has always been along the track before, and turn to achieve real-time control and digital display.