s3c2410开发平台，使用电位器调节系统电压，当电压上升时，直流电机转速随即实时提高。当电压最高时，转速达到100转。当电压下降时，直流电机转速随即实时降低，当电压为零时，直流电机停转。LED灯上能够实时的显示当前直流电机的转速。-s3c2410 development platform, using the potentiometer adjustment system voltage, when the voltage rises, the DC motor speed real-time to improve immediately. When the voltage is highest when the speed reaches 100 rpm. When the voltage drop, the DC motor speed is then reduced time, when the voltage is zero, the DC motor stops. LED light on the real-time display of the current speed of DC motor.