【正文】 ................................................................................................................2 .................................................................................................................................................2 復(fù)位電路 ......................................................................................................................................................2 晶振電路 ......................................................................................................................................................3 LED 顯示電路 .............................................................................................................................................3 按鍵輸入電路 ............................................................................................................................................4 蜂鳴器電路 .................................................................................................................................................5 .................................................................................................................................................6 軟件設(shè)計方法 ............................................................................................................................................6 系統(tǒng)軟件設(shè)計思想 ..................................................................................................................................6 系統(tǒng)主程序 .................................................................................................................................................6 中斷子程序 .................................................................................................................................................7 定時器 T0 的中斷程序設(shè)計 .......................................................................................................7 定時器 T1 的中斷程序設(shè)計 .......................................................................................................8 按鍵掃描子程序 .......................................................................................................................................9 調(diào)時、分、秒子程序 .......................................................................................................................... 10 調(diào)節(jié)鬧鐘子程序 .....................................................................................................................................11 ........................................................................................................................................ 12 硬盤調(diào)試 ................................................................................................................................................... 12 系統(tǒng)性能測試與功能說明 ................................................................................................................ 13 系統(tǒng)時鐘誤差分析 ............................................................................................................................... 13 軟件調(diào)試問題及解決 .......................................................................................................................... 13 .......................................................................................................................................................... 13 參考文獻(xiàn) ........................................................................................