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[2]曹巧媛，單片機原理及應用[M]，北京：電子工業(yè)出版社。您的腦細胞卻在以極大的速度消亡。老師教得再好，學生沒去認真有什么用處？所以我覺得一個好老師可能應該更多的去帶動學生去學，勾起學生學習的興趣。只知道自己沒學好，也似乎不愛學這方面的東西。感覺這些軟件都越來越順手了。后來在二班汪宇那里又弄來了王老師關于電子鐘設計的的課件包，借鑒了相當一部分內容，不管怎么樣我也終于是自己搞定了。同時,單片機工作也會受到環(huán)境的影響，比如溫度、濕度，以及其它電子設備的干擾。其中B鍵顯示范圍為023,0為24點；C，D鍵顯示范圍為059,0 為60分。按下A鍵后電子鐘進入自動計時狀態(tài)，電子鐘顯示00時00分00秒并開始運行。延時 MOV A, R2 JB , DISP2 RR A INC R1 MOV R2, A AJMP DISP1DISP2: RETTAB: DB 0C0H, 0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90H,0FFH,0BFH,0CH DL: MOV R6, 14H 。顯示緩沖存儲單元首地址 MOV R2, 80H 。放入十位單元 MOV A, R3 。屏蔽十位 MOV R0, A 。組合十位與個位 ADD A, 01H 。CLR0: CLR A MOV R0, A DEC R0 MOV R0, A RET。分顯示單元43H44H MOV 34H, 43H MOV 35H, 11 。加1程序 CLR C CJNE A, 24H, HOUR 。加1程序 CLR C CJNE A, 60H, ADDMM 。啟動定時器0DJNZ R4, OUTT0 。啟動定時器0 RET。 運行電子鐘 。時顯示單元4445H MOV 37H, 45H RETSTOP: CLR TR0 。秒顯示單元41H42H MOV 31H, 41H MOV 32H, 11 。分調整 LCALL ADD1 CLR C CJNE A, 60H, OUTT ACALL CLR0 AJMP OUTTKEY3: MOV R0, 41H 。轉時調整K2: CJNE A, 04H, K3 AJMP KEY2 。ANKEY: CLR EA 。A值取反ANL A, 0FH 。鍵值送20H單元保存EXIT: RET 。調鍵值處理子程序JZ KEYY 。調鍵值處理子程序JZ EXIT 。P點編碼送寄存器 MOV R0, 30H 。按鍵檢測子程序 JZ JK LCALL ANKEY LCALL DISP 。調用顯示子程序 SJMP NEXTRUNF: LCALL OUTT 。定時器0方式1工作LCALL PP 。RAM區(qū)單元個數QL: MOV R0, 00H