【正文】 為00H是為了在進入長按處理前加長延時區(qū)分用戶的長按與短按，防止誤快進ANL A,07H JZ EXIT_KEY CLR 該位使用TABLE1以消除前置0LCALL DELAYMOV A,2BHMOV P0,ASETB MOV A,0BFHCLR MOV DPTR,TABLEJB 48H,DISPMOV 2DH,0AH如果長按按鍵（調(diào)時快進），則跳過閃爍處理程序MOV 2CH,A轉(zhuǎn)換出分個位，存入2DHMOV 2FH,0AH如果長按按鍵（調(diào)時快進），則跳過閃爍處理程序MOV 2EH,A轉(zhuǎn)換出秒個位，存入2FHRETI ADD A,01H產(chǎn)生1秒基準(zhǔn)時鐘 INC 20H CJNE A,10,ADD_TIMEMOV TH0,3CHLJMP MAIN LCALL ADD_KEY START: ORG 0000H鬧鐘1 分MOV 52H,A 。分MOV 21H,A 。設(shè)置界面修改位的閃爍頻率 具體代碼在SERVE 1秒中斷服務(wù)中MOV 37H,0FFH 。4. 鬧鐘設(shè)置進入鬧鐘設(shè)置界面后，通過調(diào)整選擇鍵SET_KEY選擇調(diào)整位，選中位閃爍。所以綜上所述，此次實驗中所完成的數(shù)字鐘有著強大的功能和良好的市場前景，復(fù)合電子類產(chǎn)品的發(fā)展趨勢。與傳統(tǒng)機械表相比，它具有走時精確,顯示直觀等特點?，F(xiàn)在我們利用單片機實現(xiàn)數(shù)字時鐘計時功能的主要內(nèi)容，其中AT89C51是核心元件同時采用數(shù)碼管動態(tài)顯示“時”，“分”，“秒”的現(xiàn)代計時裝置。而51單片機是各單片機中最為典型和最有代表性的一種。按增加鍵ADD_KEY或減少鍵DEC_KEY設(shè)置所需要的時間。棧指針地址賦值MOV 3CH,0CH。時MOV 22H,A 。鬧鐘1 時MOV 51H,A 。ORG 000BHSETB 47H調(diào)整選擇鍵功能標(biāo)志：0正常走時、1調(diào)時、2調(diào)分、3調(diào)秒清零秒寄存器清零時寄存器設(shè)定定時器0工作方式1調(diào)用顯示子程序 JB 46H,MAIN取反調(diào)時閃爍標(biāo)志位CJNE A,20,RETI1作十進制調(diào)整一分鐘到 MOV 22H,A MOV A,23H CJNE A,24H,RETI1 SWAP A 顯示秒個位CLR MOVC A,A+DPTRSETB CLR MOV DPTR,TABLE1顯示時十位MOV A,P1 延時去抖動MOV A,P1 INC R4MOV 24H,00HDA ACJNE R1,02H,NEXT2選擇鍵功能標(biāo)志為3，調(diào)秒，否則跳出CJNE R5,04H,EXITADD A,99HMOV 23H,23HADD A,99HMOV 22H,59HNEXT4:字形顯示編碼TABLE1:矩陣鍵盤檢測子程序 將檢測到的鍵值存入r7CJNE R7,0FH,ZHU2AJMP ZHUXUNHUANZHU2:CJNE R7,0BH,ZHU3AJMP SHIJIANSHEZHIZHU3:CJNE R7,0CH,ZHU4AJMP WANNIANLISHEZHIZHU4:CJNE R7,01H,ZHU5AJMP NAOZHONGSHEZHIZHU5:CJNE R7,02H,ZHU6AJMP NAOZHONGSHEZHIZHU6:CJNE R7,03H,ZHU7AJMP NAOZHONGSHEZHIZHU7:CJNE R7,04H,ZHU8AJMP NAOZHONGSHEZHIZHU8:CJNE R7,05H,ZHUXUNHUAN0AJMP NAOZHONGSHEZHIZHUXUNHUAN0: AJMP ZHUXUNHUAN//年月日校正子程序 用于萬年歷進位和萬年歷設(shè)置 防止出現(xiàn)不存在的時間NYR:MOV A,33HCJNE A,32,MONTH 。轉(zhuǎn)換設(shè)置界面MOV 39H,11011111B 。修改位 右移 同上MOV A,37HCJNE A,11111110B,WSS0RR ARR ARR AMOV 37H,AS20:JNB INT0,S20AJMP WMWSS0:RR AMOV 37H,AS21:JNB INT0,S21 AJMP WMWS2: JB INT1,WM1 。s20 退出鬧鐘設(shè)置 跳回主程序//鬧鐘數(shù)據(jù)保存MOV 39H,0FFHMOV 3DH,00HMOV 3AH,11111101BMOV R1,09HMOV A,45HMOV B,0AHMUL ABADD A,44HMOV R1,AINC R1MOV A,43HMOV B,0AHMUL ABADD A,42HMOV R1,AINC R1MOV A,41HMOV B,0AHMUL ABADD A,40HMOV R1,AAJMP ZHUXUNHUANNS1: JB INT0,NS2 。s20 退出鬧鈴 跳回主循環(huán)SETB AJMP ZHUXUNHUAN/****************************************************///鬧鐘設(shè)置NAOZHONGSHEZHI://檢測是哪個鬧鐘 并初始化鬧鐘設(shè)置CJNE R7,01H,NZ2MOV A,50HMOV B,0AHDIV ABMOV 45H,AMOV 44H,BMOV A,51HMOV B,0AHDIV ABMOV 43H,AMOV 42H,BMOV A,52HMOV B,0AHDIV ABMOV 41H,AMOV 40H,BMOV 09H,50HMOV 47H,01HMOV 08H,0AHAJMP NANJIANNZ2:CJNE R7,02H,NZ3MOV A,53HMOV B,0AHDIV ABMOV 45H,AMOV 44H,BMOV A,54HMOV B,0AHDIV ABMOV 43H,AMOV 42H,BMOV A,55HMOV B,0AHDIV ABMOV 41H,AMOV 40H,BMOV 09H,53HMOV 47H,02HMOV 08H,0BHAJMP NANJIANNZ3:CJNE R7,03H,NZ4MOV A,56HMOV B,0AHDIV ABMOV 45H,AMOV 44H,BMOV A,57HMOV B,0AHDIV ABMOV 43H,AMOV 42H,BMOV A,58HMOV B,0AHDIV ABMOV 41H,AMOV 40H,BMOV 09H,56HMOV 47H,03HMOV 08H,0CHAJMP NANJIANNZ4:CJNE R7,04H,NZ5MOV A,59HMOV B,0AHDIV ABMOV 45H,AMOV 44H,BMOV A,5AHMOV B,0AHDIV ABMOV 43H,AMOV 42H,BMOV A,5BHMOV B,0AHDIV ABMOV 41H,AMOV 40H,B MOV 09H,59HMOV 47H,04H MOV 08H,0DHAJMP NANJIANNZ5:MOV A,5CHMOV B,0AHDIV ABMOV 45H,AMOV 44H,BMOV A,5DHMOV B,0AHDIV ABMOV 43H,AMOV 42H,BMOV A,5EHMOV B,0AHDIV ABMOV 41H,AMOV 40H,BMOV 09H,5CHMOV 47H,05HMOV 08H,0EHAJMP NANJIANNANJIAN:MOV 3AH,11111100B 。s20 按下 退出