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文件名称:aaa
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实现频率计1 设计要求
设计基于AT89S51的频率设计电路
1.1 设计任务
(1) 测量方波的频率:1Hz~~10kHz；
(2) 计数误差不超过±1HZ；-To achieve a design requirements Cymometer design is based on the frequency of design AT89S51 circuit design task 1.1 (1) measuring the frequency of square wave: 1Hz ~ ~ 10kHz (2) counting error does not exceed ± 1HZ
设计基于AT89S51的频率设计电路
1.1 设计任务
(1) 测量方波的频率:1Hz~~10kHz；
(2) 计数误差不超过±1HZ；-To achieve a design requirements Cymometer design is based on the frequency of design AT89S51 circuit design task 1.1 (1) measuring the frequency of square wave: 1Hz ~ ~ 10kHz (2) counting error does not exceed ± 1HZ
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aaa.doc
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