文档介绍：摘要摘要随着电子信息产业的不断发展,信号频率的测量在科技研究和实际应用中的作用日益重要。传统的频率计通常是用很多的逻辑电路和时序电路来实现的,这种电路一般运行缓慢,而且测量频率的范围比较小。考虑到上述问题,本论文设计一个基于单片机技术的数字频率计。首先,我们把待测信号经过放大整形;然后把信号送入单片机的定时计数器里进行计数,获得频率值;最后把测得的频率数值送入显示电路里进行显示。本文从频率计的原理出发,介绍了基于单片机的数字频率计的设计方案,选择了实现系统得各种电路元器件,并对硬件电路进行了仿真。关键字:单片机,频率计,测量ABSTRACTABSTRACTWiththeunceasingdevelopmentofelectronicinformationindustry,-ircuits,binedandtime-,thispaperdevelopsakindofsinglechip-,therectangularpulse,whichthemeasuredsignalisamplifiedandreshaped,,thefrequencycountercountsthenumberoftheperiodsusingtheinternaltimer/,,:puter,Frequency,Measure目录第1章引言.................................................................................................................1第2章方案论证.....................................................................................................................................................................................................................................................................................................................................................................3第3章系统硬件设计.....................................................................................................................................................................................................................................................................................................................................................