In the automatic control, combination of the stepmotor with computer is more and more close.
自动控制中，步进电动机与电子计算机的结合越来越紧密。
2
Stepmotor control, by pulse by changing the order of electricity can change the motor rotation direction, change the pulse frequency can change the motor rotation speed.
步进电机受脉冲的控制，通过改变通电的顺序可改变电机的旋转方向，改变脉冲的频率可改变电机的旋转速度。
3
The design of the single chip system, sample box thermostat circuit, sample position detecting circuit and stepmotor control circuit are discussed.