单时钟完成多点分别计时的实现和应用

                        MOV       A,55H
                        CJNE      A,#20,DE7I
                        CLR       2CH.5
                        LCALL     OUT01
   &nb

sp;                    MOV       55H,#00H
DE7I:                   LJMP      DE7
DEAL7:                  JNB       2CH.6,DE8I
                 INC       56H
                        MOV       A,56H
                        CJNE      A,#20,DE8I
                        CLR       2CH.6
                        LCALL     OUT01
                        MOV       56H,#00H
DE8I:                   LJMP &nbs

《单时钟完成多点分别计时的实现和应用(第8页)》