同时给出了一种提高实时控制精度的有效方法，即通过改写系统定时器的分频值达到改变定时器时钟中断频率的值。

And it presents a efficacious method to enhance precision of real time control, which changes value of clock interrupt frequency by changing divided frequency of system tinier.

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被称为时钟的定时器释放出准确定时的电子信号，为处理器的工作提供规则的脉冲。

Is called the clock timer release of accurate timing of electrical signals, pulse provides rules for processor work.

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一般情况下，这两种定时器是步调一致的。外部信号常常调节人体时钟命使之达到更为便利的24小时周期。

Normally the two timers are in step, and the external cues tend to regularise the internal clocks to the more convenient 24 hour period.

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