數(shù)字定時(shí)器設(shè)計(jì)(參考版)
2025-07-03 01:14本頁面
【正文】 顯示延時(shí)程序，延時(shí)1msDEL2:MOV 56H,25 DEL1:DJNZ 56H,DEL1 DJNZ 55H,DEL2 RET TAB:DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH TAB1:DB 0BFH,86H,0DBH,0CFH,0E6H,0EDH,0FDH,87H,0FFH,0EFHTAB2:DB 040H,79H 。消抖延時(shí)程序，延時(shí)10ms（2*5ms） ACALL XSCX 。退出中斷子程序 MOV TL0,0B0H SETB EA SETB ET0 SETB TR0 AJMP ZZFH JYFH:DEC 40H ZJFH:SETB 。R0為43H CJNE R0,00H,R043 INC R0 。R0為41H CJNE R0,00H,R041 INC R0 。R0為44H CJNE R0,00H,DEC1 AJMP JYFH R040:CJNE R0,00H,DEC1 。R0為42H CJNE R0,00H,DEC1 INC R0 。減1計(jì)數(shù),R0為40H CJNE R0,01H,R040 INC R0 。46H,02H46H,TCZDCLRCLR（T0ZD)EAT0中斷子程序RET將狀態(tài)顯示碼更改為D（等待狀態(tài)）45H,00HTL0,0B0HTCTS:MOVAJMPDEN3:ACALLAJMPDEN1:ACALLAJMPINCR:INCAJMPSET0:MOVR0,09H,INCRR0,40H,TCTS調(diào)整秒鐘個(gè)位AJMPXIA3:CJNEAJMP調(diào)整秒鐘十位R0,05H,INCRR0,42H,XIA3調(diào)整分鐘個(gè)位AJMPXIA1:CJNEAJMP調(diào)整分鐘十位R0,06H,INCRR0,44H,XIA1若R0不為06H,但R0為3FH，則跳出調(diào)時(shí)程序AJMPR0,3FH,JCTZR0TCTS設(shè)置鍵再次按下，將調(diào)整指針指向下一位CJNEMOV,DEN3,JCTZ鍵盤按下，消抖延時(shí)XDYS,JCTZP1,0FFH+1鍵按下后，跳轉(zhuǎn)到+1程序AJMP,DEN1,NEXTACALLJBMOVJCTZ:ACALLMOVMOV44H,00H43H,00HMOV41H,00HMOV使時(shí)間調(diào)整時(shí)處于暫停狀態(tài)CLR調(diào)時(shí)子程序(TSCX)=0 ACALL XSYS ZBTC:RETTSCX:CLR關(guān)閉顯示. MOV P0, A 。=0 ACALL XSYS JNB ,ZBTC 。關(guān)閉顯示. MOV P0, A 。輸出分鐘個(gè)位的顯示段碼. CLR 。=0 ACALL XSYS MOV DPTR,TAB1 MOV A,43H MOVC A,A+DPTR MOV P2, 0FFH 。關(guān)閉顯示.
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