【導(dǎo)讀】摘要:本文介紹了一款基于AT89C51單片機(jī)數(shù)字鐘的設(shè)計(jì)，通過數(shù)字電子鐘的設(shè)計(jì)思路，詳細(xì)敘述了系統(tǒng)硬件、軟件的具體實(shí)現(xiàn)過程。斷模塊、鬧鐘模塊、時間調(diào)整模塊設(shè)計(jì)，并采用簡單流通性強(qiáng)的MEDWIN語言編寫實(shí)現(xiàn)。統(tǒng)可以達(dá)到實(shí)際數(shù)字鐘的允許誤差范圍內(nèi)。數(shù)字電子鐘具有走時準(zhǔn)確，一鐘多用等特點(diǎn)，在生活中已經(jīng)得到廣泛的應(yīng)用。以顯示日期、農(nóng)歷、以及星期等，給人們的生活帶來了方便。

　　

【正文】 HITOLIU MOV 55H,A MOV 50H,8EH MOV 40H,00H LCALL DS1302_WRITE MOV 50H,88H MOV 40H,55H LCALL DS1302_WRITE MOV 50H,8EH MOV 40H,80H LCALL DS1302_WRITE LM: RET YEARPLUS: MOV 30H,84H LCALL WRITECOM LCALL S2CANS CJNE R6,1,UU MOV R6,0 INC 66H MOV R4,66H CJNE R4,100,OO MOV 66H,0 LJMP OO 37 UU: CJNE R6,2,LY MOV R6,0 DEC 66H MOV R4,66H CJNE R4,0FFH,OO MOV 66H,99 OO: MOV 30H,84H LCALL WRITECOM MOV R0,66H LCALL DISPLAYCHANGE MOV 30H,84H LCALL WRITECOM MOV A,66H LCALL SHITOLIU MOV 57H,A MOV 50H,8EH MOV 40H,00H LCALL DS1302_WRITE MOV 50H,8CH MOV 40H,57H LCALL DS1302_WRITE MOV 50H,8EH MOV 40H,80H LCALL DS1302_WRITE LY: RET SHITOLIU: MOV B,10 DIV AB MOV 44H,B RL A RL A RL A RL A ORL A,44H 38 RET LIUTOSHI: MOV A,@R1 ANL A,0F0H RR A RR A RR A RR A MOV B,10 MUL AB MOV 44H,A MOV A,@R1 ANL A,0FH ADD A,44H RET S2CANS: MOV P1,0FFH JB S2,WW LCALL DELAY MOV P1,0FFH JB S2,WW BB: MOV P1,0FFH JNB S2,BB LCALL XIDIAO CJNE R6,0,EXT3 INC R6 LJMP EXT3 WW: MOV P1,0FFH JB S3,EXT3 LCALL DELAY MOV P1,0FFH JB S3,EXT3 YY: MOV P1,0FFH 39 JNB S3,YY LCALL XIDIAO CJNE R6,0,EXT3 INC R6 INC R6 EXT3: RET DISPLAYCHANGE: MOV A,@R0 MOV B,10 DIV AB ADD A,30H MOV 30H,A LCALL WRITEDATE MOV A,B ADD A,30H MOV 30H,A LCALL WRITEDATE RET WEEKDISPLAYCHANGE: MOV DPTR,TAB3 MOV 58H,0 MOV A,@R0 CJNE A,1,WEEK2 MOV A,58H XX1: MOVC A,@A+DPTR MOV 30H,A LCALL WRITEDATE INC 58H MOV A,58H CJNE A,3,XX1 LJMP WEEKEND WEEK2: CJNE A,2,WEEK3 MOV 58H,3 MOV A,58H 40 XX2: MOVC A,@A+DPTR MOV 30H,A LCALL WRITEDATE INC 58H MOV A,58H CJNE A,6,XX2 LJMP WEEKEND WEEK3: CJNE A,3,WEEK4 MOV 58H,6 MOV A,58H XX3: MOVC A,@A+DPTR MOV 30H,A LCALL WRITEDATE INC 58H MOV A,58H CJNE A,9,XX3 LJMP WEEKEND WEEK4: CJNE A,4,WEEK5 MOV 58H,9 MOV A,58H XX4: MOVC A,@A+DPTR MOV 30H,A LCALL WRITEDATE INC 58H MOV A,58H CJNE A,12,XX4 LJMP WEEKEND WEEK5: CJNE A,5,WEEK6 MOV 58H,12 MOV A,58H XX5: MOVC A,@A+DPTR MOV 30H,A LCALL WRITEDATE INC 58H 41 MOV A,58H CJNE A,15,XX5 LJMP WEEKEND WEEK6: CJNE A,6,WEEK7 MOV 58H,15 MOV A,58H XX6: MOVC A,@A+DPTR MOV 30H,A LCALL WRITEDATE INC 58H MOV A,58H CJNE A,18,XX6 LJMP WEEKEND WEEK7: MOV 58H,18 MOV A,58H XX7: MOVC A,@A+DPTR MOV 30H,A LCALL WRITEDATE INC 58H MOV A,58H CJNE A,21,XX7 WEEKEND: RET S4CANS: CJNE R2,0,EXT4 MOV P1,0FFH JB S4,EXT4 LCALL DELAY MOV P1,0FFH JB S4,EXT4 AAA: MOV P1,0FFH JNB S4,AAA LCALL XIDIAO MOV A,36H JNZ W1 42 MOV A,42H JZ W5 MOV A,37H JNZ W4 INC 37H SETB F0 CLR TR1 LCALL S4DISPLAY SJMP EXT4 W5: CLR TR1 INC 42H MOV 30H,0CD LCALL WRITECOM MOV 30H,00H LCALL WRITEDATE MOV 30H,01H LCALL WRITEDATE SETB TR1 SJMP EXT4 W4: MOV 37H,0 MOV 42H,0 MOV 30H,0CDH LCALL WRITECOM MOV 30H,02H LCALL WRITEDATE MOV 30H,20H LCALL WRITEDATE CLR F0 SETB TR1 SJMP EXT4 W1: SETB LED1 SETB B1 MOV 36H,0 MOV 43H,0 43 CLR TR1 MOV 30H,0CEH LCALL WRITECOM MOV 30H,01H LCALL WRITEDATE SETB TR1 EXT4: RET S4DISPLAY: MOV 30H,0CAH LCALL WRITECOM MOV A,35H MOV B,10 DIV AB ADD A,30H MOV 30H,A LCALL WRITEDATE MOV A,B ADD A,30H MOV 30H,A LCALL WRITEDATE MOV 30H,0C7H LCALL WRITECOM MOV A,34H MOV B,10 DIV AB ADD A,30H MOV 30H,A LCALL WRITEDATE MOV A,B ADD A,30H MOV 30H,A LCALL WRITEDATE MOV 30H,0C4H LCALL WRITECOM 44 MOV A,33H MOV B,10 DIV AB ADD A,30H MOV 30H,A LCALL WRITEDATE MOV A,B ADD A,30H MOV 30H,A LCALL WRITEDATE RET NAOZHONG: MOV A,37H JNZ Q2 SJMP Q1 Q2: MOV A,62H CJNE A,33H,Q1 MOV A,61H CJNE A,34H,Q1 MOV A,60H CJNE A,35H,Q1 CPL LED1 CLR B1 MOV 30H,0CEH LCALL WRITECOM MOV 30H,20H LCALL WRITEDATE INC 36H INC 43H INC 43H SETB TR0 Q1: RET ZHENGD: MOV A,61H 45 CJNE A,39H,Q3 MOV A,60H CJNE A,3AH,Q3 MOV A,36H CJNE A,0,Q3 CLR B1 SETB TR0 Q3: RET XIDIAO: CLR B1 LCALL DELAY1 SETB B1 LCALL DELAY1 CLR B1 LCALL DELAY1 SETB B1 RET DELAY: MOV 32H,100 LR2: MOV 31H,50 DJNZ 31H,$ DJNZ 32H,LR2 RET DELAY1: MOV 49H,249 NOP DJNZ 49H,$ RET TAB: DB 54H,59H,23H,31H,12H,03,10H TAB1: DB 0CAH,0C7H,0C4H,8AH,87H,8DH,84H TAB2: DB 01H,03H,15H,15H,15H,03H,01H,00H,0FH,00H,0FH,00H,0FH,00H,0FH,00H,11H,0BH,15H,17H,15H,03H,01H,00H TAB3: DB 4DH,6FH,6EH,54H,75H,65H,57H,65H,64H,54H,68H,75H,46H,72H,69H,53H,61H,74H, 46 53H,75H,6EH END 附件 2． 仿真 電路圖 47 附件 3． PCB 圖