单片机对步进电机的控制有串行控制和并行控制两种方式。本设计采用的是串行控制方式，此方式下单片机控制系统与步进电机驱动器之间只有两条控制线。
The design adopts serial control mode, in this case there are only two controlling lines between the single chip microcomputer system and the driver of the step motor.
单片机对步进电机的控制有串行控制和并行控制两种方式。本设计采用的是串行控制方式，此方式下单片机控制系统与步进电机驱动器之间只有两条控制线。
The design adopts serial control mode, in this case there are only two controlling lines between the single chip microcomputer system and the driver of the step motor.
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