... EXT EXternal Register 外部寄存器 EXT-INT External Interrupt 外部中断信号 EXT-RING External Ring 外接振铃 ...
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介绍了由单片机控制的可控硅电路，该电路运用外部中断获得同步信号，用定时器做导通角控制，并给出实用程。
The controllable silicon circuit controlled by monolithic microcomputer is introduced, which adopts external interrupt to obtain sync signals and controls conducting angel with a timer.
由89c52和8254组成数据处理电路。 外部测量信号以外部中断方式触发89c52读取8254计数。
The data acquisition circuit is composed of chip 89C52 and 8254. External measuring signal at interrupt mode triggers 89c52 to read number in 8254 counter.
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