Synchronous deviation caused by limitation of the timer has already been studied by numerous scholars, however, Synch-sampling in the instance of signal cycle instability has been less discussed.

定时器最小定时引起的同步偏差已有众多学者研究，信号周期飘移下的同步采样则较少有人涉足。

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Fitted with built-in timer and mechanical cycle counter.

内置计时器及机械循环计数器。

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This paper introduces the way of measuring the cycle of frequency by making use of timer in the single-chip microcomputer to collect the parameters of frequency.

针对低频频率量，介绍了利用单片机的片内定时器，采用测周法实现频率量采集的方法。

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This paper introduces the way of measuring the cycle of frequency by making use of timer in the single-chip microcomputer to collect the parameters of frequency.

针对低频频率量，介绍了利用单片机的片内定时器，采用测周法实现频率量采集的方法。

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