51单片机延时0.5s和20ms的程序(汇编) 12M晶振答:DELAY_20MS: ;60H,61H,62H MOV 62H,#26 MOV 61H,#5 MOV 60H,#74 DJNZ 60H,NOP DJNZ 61H,$-7 DJNZ 62H,$-13 RET ;--- LCALL DELAY_500MS ;包括lcall和返回一共0.5s,误差0us DELAY_500MS: ;60H,61H,62H MOV 62H,#10 MOV 61H,#102 MOV 60H,#243 DJNZ 60...
51单片机20秒定时报警如何写答:ACALL DLY 10ms ---改成dly10ms 不能空格 SETB P2.0 MOV A,R1 ACALL CHANG CLR P2.1 ACALL DLY 10ms ---改成dly10ms SETB P2.1 DJNZ R3,LOOP1 TABLE:DB 0C0H,0F9H,0A4H,0B0H,99H DB 92H,82H,0F8H,80H,90H DB 88H,83H,0C6H,0A1H,86H DB 8EH,0BFH,8CH,...