基于單片機(jī)控制的數(shù)字音樂盒的畢業(yè)論文(參考版)
2025-06-25 02:15本頁面
【正文】 在開機(jī)按鈕按下時(shí)有英文歡迎提示字符，播放時(shí)顯示歌曲序號（或名稱）。鍵盤在單片機(jī)應(yīng)用系統(tǒng)中能實(shí)現(xiàn)向單片機(jī)輸入數(shù)據(jù)，傳送命令等功能，是人工干預(yù)單片機(jī)的主要手段。另外, AT89C51的指令系統(tǒng)和引腳與8051完全兼容,片內(nèi)有128B 的RAM、32條I/O口線、2個16位定時(shí)計(jì)數(shù)器、5個中斷源、一個全雙工串行口等。若用單片機(jī)來設(shè)計(jì)制作完成,由于其功能的實(shí)現(xiàn)主要通過軟件編程來完成,那么就降低了硬件電路的復(fù)雜性,而且其成本也有所降低,所以在該設(shè)計(jì)中采用單片機(jī)利用AT89C51,它是低功耗、高性能的CMOS型8位單片機(jī)。第二首《月亮代表我的心》TABLE20: DB 02H,82HDB 16H,32H,54H,02H,52HDB 0A6H,32H,54H,02H,52HDB 64H,74H,0B6H,64HDB 52H,5CH,32H,22HDB 16H,12H,14H,32H,22HDB 16H,12H,14H,22H,32HDB 26H,12H,94H,22H,32HDB 2CHDB 32H,52HDB 36H,22H,14H,54HDB 0ACH,92H,0A2HDB 96H,0A2H,96H,82HDB 3CH,54HDB 36H,22H,14H,54HDB 0ACH,92H,0A2HDB 16H,12H,14H,22H,32HDB 2CH,02H,82HDB 16H,32H,56H,12HDB 0A6H,32H,56H,52HDB 66H,72H,0B6H,62HDB 62H,52H,58H,32H,22HDB 16H,12H,14H,32H,22HDB 16H,12H,14H,22H,32HDB 26H,92H,0A4H,12H,22HDB 1CHDB 00第三首《看我七十二變》TABLE30:DB 0d4H,84H,94H,82H,92HDB 12H,22H,82H,92H,02H,92H,82H,0d2HDB 82H,92H,14H,84H,02H,0d1H,0d1HDB 0c2H,0d2H,84H,0d2H,0d2H,82H,82HDB 84H,82H,82H,94H,82H,0d2HDB 82H,82H,82H,92H,02H,82H,82H,0d2HDB 0c4H,84H,0d4H,92H,0d2HDB 82H,0d2H,82H,92H,98HDB 04H,94H,88HDB 04H,94H,88HDB 04H,94H,88HDB 04H,94H,88H,04HDB 32H,32H,22H,12H,02H,92H,12H,92HDB 32H,32H,22H,12H,02H,92H,12H,92HDB 32H,32H,22H,12H,02H,92H,12H,22HDB 54H,44H,34H,12H,22HDB 34H,22H,12H,02H,92H,12H,92HDB 32H,32H,22H,12H,02H,92H,12H,92HDB 32H,32H,22H,12H,02H,92H,12H,22HDB 54H,44H,32H,22H,12H,92HDB 00 END 附2：系統(tǒng)原理圖本設(shè)計(jì)是基于單片機(jī)控制的數(shù)字音樂盒的設(shè)計(jì),由單片機(jī)AT89C51芯片和LED數(shù)碼管為核心，輔以必要的電路，構(gòu)成的一個單片機(jī)數(shù)字音樂盒。顯示小時(shí)十位CALL ENABLECALL WRITE2MOV A,BADD A,30HMOV P0,0C9H 。顯示分個位lCALL ENABLElCALL WRITE2MOV A,MIN MOV B,3MUL ABMOV B,100DIV ABMOV R2,AMOV A,10XCH A,BDIV ABMOV A,MINXRL A,60JNZ OUTHOUSET:MOV MIN,00H MOV A,HOUMOV B,10DIV ABADD A,30H 。顯示秒個位lCALL ENABLElCALL WRITE2MOV A,SECINC AMOV SEC,AXRL A,60X4:JNZ OUTMINSET:MOV SEC,00H MOV A,MININC AMOV MIN,A MOV B,10DIV ABADD A,30HMOV P0,0CBH 。有鍵跳出JNZ STOPLJMP NEXT20STOP:CLR TR0CLR TR1LJMP MAIN0 TTM12:LCALL K2MOV A,37HCJNE A,0EH,TTM13CLR TR1LCALL DELAY1TTM120:LCALL KSLCALL DELAY1JZ TTM120LCALL K2MOV A,37HCJNE A,0EH,TTM120SETB TR1LJMP NEXT20TTM13:CJNE A,0CH,TTM14MOV A,52HINC AMOV 52H,AMOV A,53HINC AMOV 53H,AMOV A,36HINC AMOV 37H,ALJMP TTM2TTM14:CJNE A,0DH,TTM2MOV A,52HDEC AMOV 52H,AMOV A,53HDEC AMOV 53H,AMOV A,36HDEC AMOV 37H,A TTM2:RET定時(shí)器中斷子程序0TT0:PUSH ACCPUSH PSWMOV TL0,20HMOV TH0,21HCPL POP PSWPOP ACCRETI定時(shí)器中斷子程序1T1INT: MOV TH1, 3cHMOV TL1, 0b0HDJNZ L50MS,X4MOV L50MS,20每秒種時(shí)鐘刷新秒顯示一次SECSET:MOV A,SECMOV B,10DIV ABADD A,30H MOV P0,0CEH 。CAU39。DFF WB 39。WELCOM HERE39。寫數(shù)據(jù)CALL WRITE1 RET寫指令ENABLE: CLR RSCLR RWCLR ELCALL DELAYSETB ERET寫數(shù)據(jù)WRITE1:MOV R1,00HA1:MOV A,R1MOVC A,A+DPTRCALL WRITE2INC R1CJNE A,0FEH,A1 。顯示秒個位CALL ENABLECALL WRITE2MOV P0,0C0H 。顯示冒號CALL ENABLECALL WRITE2MOV A,SECMOV B,10DIV ABADD A,30H MOV P0,0CEH 。顯示分十位CALL ENABLECALL WRITE2MOV A,BADD A,30HMOV P0,0CCH 。顯示小時(shí)個位CALL ENABLECALL WRITE2MOV A,3AHMOV P0,0DH 。將BCD嗎轉(zhuǎn)化為ASIIC碼MOV P0,0C8H 。設(shè)光標(biāo)地址 LCALL ENABLEMOV DPTR,TABLE1。列掃描MOV A,R2JNB ,N2LJMP N1N2:LJMP KEYN1
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