Based on pulse counting principle, the high precision time interval can be obtained by measuring the number of the high-frequency reference clock through it.
设计了一种高精度时间间隔测量模块，该模块由单片机控制，采用脉冲计数原理，通过测量时间间隔内高频参考时钟个数，得到被测时间间隔的精确值。
Historical data from North China over the period 1480-1980 is analyzed in terms of interval and counting properties.
本文借助点过程的区间性质和计数性质对从1480年到1980年间中国北部的地震历史资料进行统计分析。
The timer can perform functions like frequency measurement, event counting, interval measurement, clock generation, delay timing, and so on.
计时器可以履行功能，如频率测量，事务计数，间隔测量，时钟产生器，延迟时候等。
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