Equal precision frequency measurement principle, given the frequency of using the C8051F041 microcontroller for high-precision digital controller chips Total design method. The method to test frequency signal after the amplification of the plastic input single-chip, and then controlled by the microcontroller internal Counter and treat them separately at the same time count of the measured signal and the standard signal, the operation processing the measurement results by the LCD in real time significantly Said record transmitted to the host computer through the RS232 serial. The design method compared with the conventional frequency measurement system, Frequency measurement precision, high speed, wide range

基于C8051F041的高精度频率计设计ck.kdh

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