数据电极的设置方向是大致上与这些扫描电极与这些维持电极相交。
The data electrodes have set direction crossing with the maintaining electrodes and the scanning electrodes.
利用AT89C52单片机控制两台步进电机，通过RS232总线进行上位机（PC）与下位机（AT89C52）的通讯，可方便地进行步进电机扫描方式、转速、步长和方向的设置，实现了对步进电机的精确控制。
The communication between PC and the AT89C52 chip is achieved through the RS232 bus, so scanning mode, rotate speed, step and direction of step motor are setup expediently.
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