The voltage is changed by varying trigger angle of the rectifier , pulse distribution implemented by software, and all control conducted on computer TP 801 so as to fully digitalize the whole system.

随后采用可控硅整流加滤波的电路对步进电机供电，用改变可控硅触发角的大小来改变供电电压，并用软件实现步进步机的脉冲分配，全部控制用单板机来实现，使整个系统完全数字化。

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Control of the portable and home software platform now not only means control of software distribution, but of all content distribution.

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