motor.c是一个简单的52单片机通过rs232串口控制直流电机的C程序。可以学习定时器、串口的中断，以及通过输出一定占空比的PWM波来控制电机转速、转向的方法。-motor.c 52 microcontroller is a simple DC motor control by rs232 serial C program. Can learn timer, serial port interrupts, and by a certain duty cycle of the PWM wave output to control the motor speed, steering method.