我是一名学生，本程序为一个循迹避障小车的程序，自己为挑战杯做的，有8个传感器。5个做循迹，3个做避障用，都接在c51的p1口。转弯控制用伺服机，后轮用直流电机用l293d驱动，我试了效果非常好！-I am a student, the procedures for a vehicle obstacle avoidance tracking procedures for the Challenge Cup to do their own, and has eight sensors. 5 to d

C51使用定时器生成PWM,用于驱动L293D,实现直流电机调速.调试通过.-C51 use the timer to generate PWM, for driving L293D, DC motor speed control. Debugging.