文章以等精度频率计为例引入单片机和CPLD结合设计电子系统的方法，并给出原理框图和仿真波形。
Tlus paper introduces a way to realize the equal accuracy frequency accounts with MCU and CPLD. and provides with the frame principle of frame as well as simulated wave.
该频率计利用等精度的设计方法，克服了基于传统测频原理的频率计的测量精度随被测信号频率的下降而降低的缺点。
The cymometer makes use of equal-accuracy design that can overcome the disadvantage of traditional measuring principle, which precision declines as measured signal frequency does.
根据等精度测频原理，本设计克服了基于传统测频原理的频率计的测量精度随被测信号频率的下降而降低的缺点。
Based on equal precision frequency principle, this design avoids traditional cymometer's defect that precision declines as the frequency measured declines.
根据等精度测频原理，本设计克服了基于传统测频原理的频率计的测量精度随被测信号频率的下降而降低的缺点。
Based on equal precision frequency principle, this design avoids traditional cymometer's defect that precision declines as the frequency measured declines.
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