【正文】 JNE R2,00H,RY31 MOV 56H,29H MOV A,R6 JB ,RY32 。R2中為0，則為前一個(gè)月 MOV 56H,30H 。的的最后一天RY32: MOV 57H,03H CLR F0 LJMP S_PLAYRY31: MOV A,R2 。R2中為日的值 MOV R0,A LCALL D_BCD MOV 56H,A MOV 57H,03H SETB F0 LJMP S_PLAYY4: CJNE R2,00H,Y41 LCALL CHECKRE 。查前一個(gè)月是否為閏月 CJNE A,03H,Y42 MOV 56H,29H 。前一個(gè)月是閏月 MOV A,R4 。R2中為0，則為前一個(gè)月 ANL A,0FH 。的最后一天 JNZ Y43 MOV 56H,30H MOV 57H,03H SETB F0 LJMP S_PLAYY43: MOV 57H,03H SETB F0 LJMP S_PLAYY42: MOV 56H,29H 。前一個(gè)月不是閏月 MOV A,R6 JB ,Y44 MOV 56H,30HY44: MOV 57H,03H CLR F0 LJMP S_PLAYY41: MOV A,R2 。R2中為日的值 MOV R0,A LCALL D_BCD MOV 56H,A MOV 57H,04H CLR F0 LJMP S_PLAYRY4: CJNE R2,00H,RY41 MOV 56H,29H 。R2中為0，則為前一個(gè)月 MOV A,R6 。的的最后一天 JB ,RY42 MOV 56H,30HRY42: MOV 57H,04H CLR F0 LJMP S_PLAYRY41: MOV A,R2 。R2中為日的值 MOV R0,A LCALL D_BCD MOV 56H,A MOV 57H,04H SETB F0 LJMP S_PLAYY5: CJNE R2,00H,Y51 LCALL CHECKRE 。查前一個(gè)月是否為閏月 CJNE A,04H,Y52 MOV 56H,29H 。前一個(gè)月是閏月 MOV A,R4 。R2中為0，則為前一個(gè)月 ANL A,0FH 。的最后一天 JNZ Y53 MOV 56H,30H MOV 57H,04H SETB F0 LJMP S_PLAYY53: MOV 57H,04H SETB F0 LJMP S_PLAYY52: MOV 56H,29H 。前一個(gè)月不是閏月 MOV A,R6 JB ,Y54 MOV 56H,30HY54: MOV 57H,04H CLR F0 LJMP S_PLAYY51: MOV A,R2 。R2中為日的值 MOV R0,A LCALL D_BCD MOV 56H,A MOV 57H,05H CLR F0 LJMP S_PLAYRY5: CJNE R2,00H,RY51 MOV 56H,29H 。R2中為0，則為前一個(gè)月 MOV A,R6 。的最后一天 JB ,RY52 MOV 56H,30HRY52: MOV 57H,05H CLR F0 LJMP S_PLAYRY51: MOV A,R2 。R2中為日的值 MOV R0,A LCALL D_BCD MOV 56H,A MOV 57H,05H SETB F0 LJMP S_PLAYY6: CJNE R2,00H,Y61 LCALL CHECKRE 。查前一個(gè)月是否為閏月 CJNE A,05H,Y62 MOV 56H,29H 。前一個(gè)月是閏月 MOV A,R4 。R2中為0，則為前一個(gè)月 ANL A,0FH 。的最后一天 JNZ Y63 MOV 56H,30H MOV 57H,05H SETB F0 LJMP S_PLAYY63: MOV 57H,05H SETB F0 LJMP S_PLAYY62: MOV 56H,29H 。前一個(gè)月不是閏月 MOV A,R6 JB ,Y64 MOV 56H,30HY64: MOV 57H,05H CLR F0 LJMP S_PLAYY61: MOV A,R2 。R2中為日的值 MOV R0,A LCALL D_BCD MOV 56H,A MOV 57H,06H CLR F0 LJMP S_PLAYRY6: CJNE R2,00H,RY61 MOV 56H,29H 。R2中為0，則為前一個(gè)月 MOV A,R6 。的最后一天 JB ,RY62 MOV 56H,30HRY62: MOV 57H,06H CLR F0 LJMP S_PLAYRY61: MOV A,R2 。R2中為日的值 MOV R0,A LCALL D_BCD MOV 56H,A MOV 57H,06H SETB F0 LJMP S_PLAYY7: CJNE R2,00H,Y71 LCALL CHECKRE 。查前一個(gè)月是否為閏月 CJNE A,06H,Y72 MOV 56H,29H 。前一個(gè)月是閏月 MOV A,R4 。R2中為0，則為前一個(gè)月 ANL A,0FH 。的最后一天 JNZ Y73 MOV 56H,30H MOV 57H,06H SETB F0 LJMP S_pLAYY73: MOV 57H,06H SETB F0 LJMP S_PLAYY72: MOV 56H,29H 。前一個(gè)月不是閏月 MOV A,R6 JB ,Y74 MOV 56H,30HY74: MOV 57H,06H CLR F0 LJMP S_PLAYY71: MOV A,R2 。R2中為日的值 MOV R0,A LCALL D_BCD MOV 56H,A MOV 57H,07H CLR F0 LJMP S_PLAYRY7: CJNE R2,00H,RY71 MOV 56H,29H 。R2中為0，則為前一個(gè)月 MOV A,R5 。的最后一天 JB ,RY72 MOV 56H,30HRY72: MOV 57H,07H CLR F0 LJMP S_PLAYRY71: MOV A,R2 。R2中為日的值 MOV R0,A LCALL D_BCD MOV 56H,A MOV 57H,07H SETB F0 LJMP S_PLAYY8: CJNE R2,00H,Y81 LCALL CHECKRE 。查前一個(gè)月是否為閏月 CJNE A,07H,Y82 MOV 56H,29H 。前一個(gè)月是閏月 MOV A,R4 。R2中為0，則為前一個(gè)月 ANL A,0FH 。的最后一天 JNZ Y83 MOV 56H,30H MOV 57H,07H SETB F0 LJMP S_PLAYY83: MOV 57H,07H SETB F0 LJMP S_PLAYY82: MOV 56H,29H 。前一個(gè)月不是閏月 MOV A,R5 JB ,Y84 MOV 56H,30HY84: MOV 57H,07H CLR F0 LJMP S_PLAYY81: MOV A,R2 。R2中為日的值 DL1MS: MOV R6,14HDL1: MOV R7,19HDL2: DJNZ R7,DL2 DJNZ R6,DL1 RET。數(shù)據(jù)表~~~~~~~~~~~~~~~~~~~`~~TAB: DB 35,15H,51H,00H,23,11H,52H,41H,42,12H,65H,00H DB 31,11H,32H,00H,21,42H,52H,21H,39,52H,25H,00H DB 28,25H,04H,71H,48,66H,42H,00H,37,33H,22H,00H DB 25,15H,24H,51H,44,05H,52H,00H,33,22H,65H,00H DB 22,21H,25H,41H,40,24H,52H,00H,30,52H,42H,91H DB 49,55H,05H,00H,38,26H,44H,00H,27,53H,50H,60H DB 46,53H,24H,00H,35,25H,54H,00H,24,41H,52H,41H DB 42,45H,25H,00H,31,24H,52H,00H,21,51H,12H,21H DB 40,55H,11H,00H,28,26H,21H,61H,47,26H,61H,00H DB 36,13H,31H,00H,25,05H,31H,51H,43,12H,54H,00H DB 33,51H,25H,00H,22,42H,25H,31H,41,32H,22H,00H DB 30,55H,02H,71H,49,55H,22H,00H,38,26H,62H,00H DB 27,13H,64H,60H,45,13H,32H,00H,34,12H,55H,00H DB 23,10H,53H,51H,42,22H,45H,00H,31,52H,22H,00H DB 21,52H,44H,21H,40,55H,44H,00H,29,26H,50H,71H DB 47,26H,64H,00H,36,25H,32H,00H,25,23H,32H,50H DB 44,44H,55H,00H,32,24H,45H,00H,22,55H,11H,30H END 附錄三：系統(tǒng)使用說明書　 如電路原理總圖可知，本電路具有年、月、日、周日、時(shí)、分、秒、溫度和農(nóng)歷功能，總共由21個(gè)LED數(shù)碼管顯示，如下圖a所示。 　　　　　　　　　　　　　　　 圖－a日期和時(shí)間的修改由3個(gè)按鍵構(gòu)成。如圖b所示。鍵１為向右移；鍵２為加１；鍵３為減１。 圖－b35 / 3