目录第一部分摘要……………………………………………………...………………………………………………..………………………………………………………….........……………………………………………………………….……………………………………………………………….……………………………………………………………………………………………………….……………………………………………………………….………………………………………………………….……………………………………………………………….……………………………………………………….……………………………………………………….………………………………………………….……………………………………………….……………………………………………………………….……………………………………………………………….……………………………………………………………………………………...………………………………………………………...……………………………………………………………..……………………………………………………………..………………………………………………….………………………………………………………….………………………………………………………………………………………………………………………….………………………………………….………………………………………………………….………………………………………………………….…………………………………………………………….……………………………………………………………………………………………………………………………………………………………………….……………………………………...……………………………………………….……………………………………………….……………………………………………….……………………………………………...……………………………………………...18附录……………………………………………………………18例程…………………………………………………………......................................18摘要LED大屏幕显示系统,以AT89S52单片机为核心,由键盘显示、录放音模块、光电开关、温度采集、定时闹铃、LED大屏幕显示等功能模块组成。基于题目基本要求,本系统对时间显示和大屏幕显示进行了重点设计。此外,扩展单片机外围接口、温度采集、非接触式止闹、滚动屏幕显示、语音报时等功能。本系统大部分功能由软件来实现,吸收了硬件软件化的思想,大部分功能通过软件来实现,使电路简单明了,系统稳定性大大提高。本系统不仅成功的实现了要求的基本功能,发挥部分也得到完全的实现,而且有一定的创新功能。关键字:单片机LED大屏幕滚屏显示AbstractThislargeLEDdisplayscreensystem,puterAT89S52,posedbythefollowingfunctionalmodules:keyboarddisplaying,,temperaturegathering,timingbell,Accordingtothebasicrequirementsofthesubject,oursystemstressesontherealizationoftimedisplayingandlargescreendisplaying,Furthermore,wealsoextendtheprimaryfunction,addingnewfunctions,suchasthesinglechipperipheralports,temperaturegathering,untouche
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