【正文】 MOV 73H,9 RETI REL3: DEC 71H MOV 72H,5 MOV 73H,9 RETI FUCS1: CLR SETB 。 MOV 70H,42H MOV 71H,51H 。把通的時間送入數(shù)碼管 MOV 72H,52H MOV 73H,53H MOV 70H,11 N1S: RETI 。***LED數(shù)碼管動態(tài)掃描程序 DIS:MOV DPTR,TAB MOV A,70H 。 JZ LED11 MOVC A,@A+DPTR JNB 50H,LED1 SETB LED1: CPL A MOV P0,A CLR LCALL DELAYLED11: SETB MOV A,71H MOVC A,@A+DPTR JNB 51H,LED2 SETB LED2: CPL A MOV P0,A CLR LCALL DELAY SETB MOV A,72H MOVC A,@A+DPTR JNB 52H,LED3 SETB LED3: CPL A MOV P0,A CLR LCALL DELAY SETB MOV A,73HMOVC A,@A+DPTRJNB 53H,LED4SETB LED4: CPL A MOV P0,A CLR LCALL DELAY SETB RET RET DELAY:MOV R7,10H DEL: DJNZ R7,DEL RET TAB:DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH, 38H , 76H 。。。獨立式按鍵電路程序88888888888888888888888 KEY1: MOV R4,60H 。設(shè)置鍵 CJNE R4,0,KEY1_1 MOV 70H,10 INC 60H SETB 53H CLR 51H CLR 52H CLR 50H CLR TR0 RETI KEY1_1:CJNE R4,1,KEY1_2 INC 60H MOV 70H,11 MOV 41H, 71H MOV 42H, 72H MOV 43H, 73H SETB 53H CLR 51H CLR 52H CLR 50H CLR TR0 RETIKEY1_2: CJNE R4,2,KEY1_3 MOV 60H,0MOV 51H, 71HMOV 52H, 72H MOV 53H, 73H CLR 50H CLR 51H CLR 52H CLR 53H SETB 55H 。電路停止 MOV 70H,0 MOV 71H,41H MOV 72H,42H MOV 73H,43H CLR SETB SETB TR0KEY1_3: RETI INEX0P:SETB JNB ,KEY1 SETB JNB ,KEY2 SETB JNB ,KEY3 RETI KEY2: JNB 50H,NEXT1 。點亮小數(shù)點 CLR 50H SETB 51H CLR 52H CLR 53H SJMP NEXTE NEXT1:JNB 51H,NEXT2 CLR 51H SETB 52H CLR 50H CLR 53H SJMP NEXT3 NEXT2: JNB 52H,NEXT3 CLR 52H SETB 53H CLR 51 CLR 50H SJMP NEXTE NEXT3: JNB 53H,NEXTE CLR 53H SETB 50H CLR 51H CLR 52H NEXTE:RETI KEY3: JNB 50H,NKEY1 。在點亮小數(shù)點的數(shù)碼管上加1 INC 70H MOV R4,70H CJNE R4,10,NKEY4 MOV 70H,0 RETI NKEY1:JNB 51H,NKEY2 INC 71H MOV R4,71H CJNE R4,10,NKEY4 MOV 71H,0 RETI NKEY2: JNB 52H,NKEY3 INC 72H MOV R4,72H CJNE R4,10,NKEY4 MOV 72H,0 RETI NKEY3:JNB 53H,NKEY4 INC 73H MOV R4,73H CJNE R4,10,NKEY4 MOV 73H,0 NKEY4: RETI END 附錄2：電路總原理圖3：元件清單序號名稱規(guī)格數(shù)量單位1萬能板大塊1塊2單片機AT89C511塊3插槽DIP402只4電阻1個5電解電容10UF1個6晶振6MHZ1個7瓷片電容20PF2個8LED數(shù)碼管四位一體1只9電阻360歐10個10電阻10K4個11電容104PF1個12二極管4148型3個13三極管9012型4個14按鍵二合一3個15發(fā)光二極管紅色、綠色2個