毕业设计基于单片机的数字式频率检测装置设计.doc

xxxxxxx学院毕业生论文(设计)论文题目:院  系:____________________________________专  业:____________________________________年  级:____________________________________姓  名:____________________________________学  号:____________________________________指导教师:____________________________________教师职称:____________________________________研究方向:____________________________________年 月 日摘要本设计以AT89S52单片机为核心充分利用硬件资源设计的一种频率计,该频率计首先将被测信号放大整形处理,变成满足单片机I/O口接受的TTL/CMOS兼容信号从单片机的T1输入口输入直接累加脉冲数,将单片机内部定时器定时为1S,这时累加的脉冲数即为被测信号的频率。最后经单片机处理送至lcd液晶显示屏显示。【关键字】单片机(AT89S52)、放大整形、数据处理、1602aLCD、【Abstract】Thisdesigntakeat89S52monolithicintegratedcircuitasthecorefullusehardwaresourcedesign'sonekindoffrequencymeter,thisfrequencymeterwillbemeasuredfirstthatsignalenlargementreshapingprocessing,turnssatisfiesTTL/whichthemonolithicintegratedcircuitI/patiblesignalfrommonolithicintegratedcircuit'sT1inputportinputdirectsummationpulsenumber,themonolithicintegratedcircuitinteriortimerfixedtimeis1S,.【Keyword】AT89S52、Largerplastic、Dataprocessing、1602aLCD目录引言………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… …………………………………………………………………………(低频)的硬件结构设计…………………………………………………… ……………………………………………………………………… ………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………………………………………………………………………… LF353双运算放大器简介…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………