【文章內(nèi)容簡介】 順利做好，把軟件調(diào)試順利完成。最后，衷心感謝這次對我的畢業(yè)設(shè)計提供無私幫助的所有老師和同學(xué)!參考文獻[1] 閻石. 數(shù)字電子技術(shù)基礎(chǔ). 北京: 高等教育出版社, 1998[2] 李葉紫. MCS51單片機應(yīng)用教程. 北京: 清華大學(xué)出版社,2002 [3] 樓然苗. 51系列單片機設(shè)計實例. 北京: 北京航空航天大學(xué)出版社,1999 [4] 黃菊生. 單片機原理與接口技術(shù). 北京：國防工業(yè)出版社 [5] 楊西明、朱騏主. 單片機編程與應(yīng)用入門. 北京：機械工業(yè)出版社 附錄1 元器件清單名稱總數(shù)量型號備注電阻21K(1),10K(1)電容330pf(2),10uf(1)液晶顯示器11602A16腳單片機1AT89C51晶振112MHz揚聲器1三極管12N3906PNP鍵盤14X4附錄2 電路圖音樂盒硬件電路圖附錄3 源程序XN: LJMP KEYK1: LCALL MODD LCALL MODD LCALL KS JNZ K2 LJMP KEYK2: MOV R2,0FEH MOV R4, 00HK3: MOV A,R2 MOV P1,A MOV A,P1 JB ,L1 MOV A,00H LJMP LKL1: JB ,L2 MOV A,04H LJMP LKL2: JB ,L3 MOV A,08H LJMP LKL3: JB ,NEXT1 MOV A,0CHLK: ADD A,R4 PUSH ACCK4: LCALL DELAY1 LCALL KS JNZ K4 MOV R3,07H CLR A MOV R0,30H MOV R1,31HMM1: MOV A,@R1 MOV @R0,A INC R0 INC R1 DJNZ R3,MM1 POP ACC MOV @R0,A RETRS BIT RW BIT E BIT L50MS EQU 60HL1MS EQU 61HL250MS EQU 62HSEC EQU 65HMIN EQU 64HHOU EQU 63HORG 0000HLJMP MAINORG 000BHLJMP TT0ORG 001BHLJMP T1INTORG 1000HMAIN: MOV SP,70HMOV P0,01HCALL ENABLEMOV P0,38HLCALL ENABLEMOV P0,0FHLCALL ENABLEMOV P0,06HLCALL ENABLELCALL INITIL KEY1: LCALL KEY LCALL MODD LIMP KEY1KEY: NOP NOP LCALL KS JNZ K1 LCALL KAIJI LCALL SOPMOV A,37HMOV DPTR,TABLE3 MOVC A,@A+DPTRCALL WRITE2 RETKAIJI:MOV A,37HCJNE A,0FH,DFFMOV P0,80H CALL ENABLEMOV DPTR,TABLE1。CALL WRITE1DFF:RETSOP:MOV A,37HCJNE A,01H,A11LCALL MODDMOV 52H,HIGH TABLE10MOV 53H,LOW TABLE10LCALL INITILE2LCALL MAIN0A11:CJNE A,02H,A22LCALL MODDMOV 52H,HIGH TABLE20MOV 53H,LOW TABLE20 LCALL INITILE2 LCALL MAIN0A22:CJNE A,03H,A33LCALL MODDMOV 52H,HIGH TABLE30MOV 53H,LOW TABLE30 LCALL INITILE2 LCALL MAIN0 A33:CJNE A,04H,A44LCALL MODDMOV 52H,HIGH TABLE40MOV 53H,LOW TABLE40 LCALL INITILE2 LCALL MAIN0A44:CJNE A,05H,A55NEXT1: INC R4 MOV A,R2 JNB ,N2 LJMP N1N2: LJMP KEYN1: Rl A MOV R2,A LJMP K3KS: MOV A,0F0H MOV P1,A NOP NOP MOV A,P1 CPL A ANL A,0F0H RETDELAY1: SETB RS0Dl: MOV R5,0ahDL2: MOV R6,63DL3: NOP NOP DJNZ R6,DL3 DJNZ R5,DL2 CLR RS0 RETINITIL: MOV R3,08H MOV R0,30HM1: MOV @R0,00H INC R0 DJNZ R3,M1 RETMODD: MOV P0,8EH CALL ENABLEMOV A,HOUMOV B,10DIV ABADD A,30H 。 MOV P0,0C8H CALL ENABLECALL WRITE2MOV A,BADD A,30HMOV P0,0C9H CALL ENABLECALL WRITE2MOV A,3AHMOV P0,0DH CALL ENABLECALL WRITE2MOV A,MINMOV B,10DIV ABADD A,30HMOV P0,0CBH CALL ENABLECALL WRITE2MOV A,BADD A,30HMOV P0,0CCH CALL ENABLECALL WRITE2MOV A,3AHMOV P0,0CDH CALL ENABLECALL WRITE2MOV A,SECMOV B,10DIV ABLCALL MODD MOV 52H,HIGH TABLE50 MOV 53H,LOW TABLE50 LCALL INITILE2 LCALL MAIN0A55: CJNE A,06H,A66 LCALL MODD MOV 52H,HIGH TABLE60 MOV 53H,LOW TABLE60 LCALL INITILE2 LCALL MAIN0 A66: CJNE A,07H,A77 LCALL MODD MOV 52H,HIGH TABLE70 MOV 53H,LOW TABLE70 LCALL INITILE2 LCALL MAIN0 A77: CJNE A,08H,A88 LCALL MODD MOV 52H,HIGH TABLE80 MOV 53H,LOW TABLE80 LCALL INITILE2 LCALL MAIN0A88: CJNE A,09H,A99 LCALL MODD MOV 52H,HIGH TABLE90 MOV 53H,LOW TABLE90 LCALL INITILE2 LCALL MAIN0 A99: CJNE A,0AH,AAA LCALL MODD MOV 52H,HIGH TABLE100 MOV 53H,LOW TABLE100 LCALL INITILE2 LCALL MAIN0 AAA: RET INITILE2: MOV L50MS,20 MOV L1MS,00H MOV L250MS,00H MOV SEC,00H MOV MIN,00H MOV HOU,00HD1:MOV R5,0FFHDJNZ R5,$DJNZ R4,D1RET TAB:DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0f8HDB 80H,90H,88H,83H,0C6H,0A1H,86H,8EHTAB1:DB 89H,86H,0C7H,0C7H,0C0HTAB2:DB 0C6H,88H,0C0HTABLE1: DB 39。WELCOM HERE39。,0FEHTABLE2: DB 39。DFF WB 39。,0FEHTABLE4: DB 39。CAU39。,0FEHTABLE3: DB 30H,31H,32H,33H DB 34H,35H,36H,37H DB 38h,39H,41H,42H DB 43H,44H,45H,46H MAIN0:MOV TMOD,11H MOV IE,8AH 。MOV TH1, 3CH 。MOV TL1, 0B0H LCALL KS JNZ TTM12 MOV 40H,00HNEXT20:MOV A,40H MOV DPH,52H MOV DPL,53H MOVC A,@A+DPTR MOV R2,A JZ STOP ANL A,0FHADD A,30H MOV P0,0CEH CALL ENABLE CALL WRITE2 MOV A,B ADD A,30H MOV P0,0CFH CALL ENABLE CALL WRITE2 MOV P0,0C0H CALL ENABLE MOV DPTR,TABLE2 CALL WRITE1 RETENABLE:CLR RS CLR RW CLR E LCALL DELAY SETB ERETWRITE1:MOV R1,00HA1:MOV A,R1 MOVC A,@A+DPTR CALL WRITE2 INC R1 CJNE A,0FEH,A1 RETWRITE2:MOV P0,A SETB RS CLR RW CLR E CALL DELAY SETB E RETDELAY: MOV R4,05SETB TR1LJMP NEXT20TTM13:CJNE A,0CH,TTM14MOV A,52HINC AM