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FREQ

于 2010-05-02 发布 文件大小:1KB
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代码说明:

说明:  用mcs-52系列单片机实现等精度频率测量,T1引脚接被测TTL信号,晶振22.1184MHz,对任何频率都可以实现很高精度的测量(精度

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