... precision fork 精密锻造 precision frequency meter 精密频率计 precision frequency standard 精确频率标准 ...
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This article proposes with designs frequency meter's method based on at89C51 monolithic integrated circuit to be possible to obtain the precision to be high, the frequency range wide frequency meter.
本文提出的用基于AT 89 C 51单片机设计频率计的方法可获得精度较高、频率范围宽的频率计。
And introduce a key design of high precision and width frequency area of phase meter.
并介绍一种高精度、宽频率范围的相位表的关键设计。
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