However, in common embedded system, the real-time clock interrupt will wake up the CPU rapidly and periodically even there is no other devices' interrupt. That will increase system power consumption.

但在一般的嵌入式系统中，当系统进入IDLE状态后，即使没有其他设备中断，实时时钟中断也会不断唤醒CPU，这样就会大大增加系统的功耗。

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While it is running, it records the address of the instruction that is being executed every time a system-clock interrupt occurs.

当它运行时，它会记录每次系统时钟中断发生时正在执行的指令的地址。

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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.

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。

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