【正文】 idity sensor, 1602LCD, temperature and humidity control systemComment [A1]: 目錄太擠了，可以將第三層刪掉目 錄1 引言 .......................................................................................................................................................3 課題背景 .........................................................................................................................................3 ..........................................................................................................................3 ......................................................................................................3 ......................................................................................................................42 系統(tǒng)總體設(shè)計 .......................................................................................................................................5 ..................................................................................................................................5 ..................................................................................................................................5 ......................................................................................................................................5 ..........................................................................................................................5 ......................................................................................................................................5 ......................................................................................................................6 ..............................................................................................................................6 ......................................................................................................................63 系統(tǒng)硬件設(shè)計 .......................................................................................................................................8 ..............................................................................................................................8 AT89C51單片機 ......................................................................................................................8 AT89C51引腳簡單介紹 ........................................................................................................10 時鐘電路 ...............................................................................................................................10 復(fù)位電路 ...............................................................................................................................10 ................................................................................................................................11 ................................................................................................................11 AM2301數(shù)字溫濕度傳感器 ..................................................................................................11 液晶顯示裝置設(shè)計 .......................................................................................................................13 ................................................................................................................................13 ........................................................................................................................14 光聲報警系統(tǒng)與溫濕度控制系統(tǒng)設(shè)計 .......................................................................................15 ........................................................................................................................15 ....................................................................................................................164 軟件系統(tǒng)設(shè)計 ..............................................