给你们源程序：

        ORG    00H
START:
        MOV    A,#00
        MOV    P0,A
        CALL   DIS
        CALL   DELAY
        JMP    START
DIS:    MOV    R2,#25
        MOV    20H,#00
D4:     MOV    R4,#00H
        MOV    R1,#0F5H
D5:     MOV    R6,#08
        MOV    R0,20H
D2:     CALL   READ1
        INC    R4
        DJNZ   R6,D2
        MOV    R4,#00H
        DJNZ   R1,D5
        MOV    20H,R0
        DJNZ   R2,D4
        RET
READ1:  MOV    A,R4
        MOV    P2,A
        MOV    A,R0
        MOV    DPTR,#TABLE
        MOVC   A,@A+DPTR
        MOV    P0,A
        INC    R0
        MOV    R3,#100
        DJNZ   R3,$
        MOV    A,#00H
        MOV    P0,A
        RET
DELAY:  MOV    R3,#200
D7:     MOV   R5,#248
        DJNZ   R5,$
        DJNZ   R3,D7
        RET

TABLE:
DB  00H,00H,00H,00H,00H,00H,00H,81H
DB  00H,00H,00H,00H,00H,00H,81H,0FFH
DB  00H,00H,00H,00H,00H,81H,0FFH,81H
DB  00H,00H,00H,00H,81H,0FFH,81H,00H
DB  00H,00H,00H,81H,0FFH,81H,00H,00H
DB  00H,00H,81H,0FFH,81H,00H,00H,00H
DB  00H,81H,0FFH,81H,00H,00H,00H,38H
DB  81H,0FFH,81H,00H,00H,00H,38H,7CH
DB  0FFH,81H,00H,00H,00H,38H,7CH,7EH
DB  81H,00H,00H,00H,38H,7CH,7EH,3FH
DB  00H,00H,00H,38H,7CH,7EH,3FH,7EH
DB  00H,00H,38H,7CH,7EH,3FH,7EH,7CH
DB  00H,38H,7CH,7EH,3FH,7EH,7CH,38H
DB  38H,7CH,7EH,3FH,7EH,7CH,38H,00H
DB  7CH,7EH,3FH,7EH,7CH,38H,00H,00H
DB  7EH,3FH,7EH,7CH,38H,00H,00H,00H
DB  3FH,7EH,7CH,38H,00H,00H,00H,0FCH
DB  7EH,7CH,38H,00H,00H,00H,0FCH,02H
DB  7CH,38H,00H,00H,00H,0FCH,02H,01H
DB  38H,00H,00H,00H,0FCH,02H,01H,01H
DB  00H,00H,00H,0FCH,02H,01H,01H,02H
DB  00H,00H,0FCH,02H,01H,01H,02H,0FCH
DB  00H,0FCH,02H,01H,01H,02H,0FCH,00H
DB  0FCH,02H,01H,01H,02H,0FCH,00H,00H
DB  02H,01H,01H,02H,0FCH,00H,00H,00H

end