初学者，好像转不了ASCII码，发送的数据很乱，看不明白。或者有相关实验的资料推一下也行，谢谢大家。
求修改代码：
ORG 0000H
AJMP MAIN
ORG 0023H
AJMP RT
ORG 0030H
MAIN:MOV R2,#00H
MOV R5,#00H
MOV TMOD,#20H
MOV SCON,#50H
MOV TH1,#0F3H
MOV TL1,TH1
MOV PCON,#00
SETB EA;×üÖD¶Ï
SETB ES;′®DDÖD¶Ï
SETB TR1;′ò¿a¶¨ê±
LOOP:
LCALL DISPLAY ;
MOV A,P1
ANL A,#00001111B;
MOV R5,A
MOV SBUF,A
JNB P1.5,DONE
SJMP LOOP
DISP:
CLR RI
MOV A,SBUF
MOV R6,A
CLR CY
CLR F0
SUBB A,#58
MOV F0,C ;
JNB F0, _A_F
_0_9:
MOV A,R6
SUBB A,#48
MOV R5,A
LJMP LOOP
_A_F:
MOV A,R6
SUBB A,#55
MOV R5,A
LJMP LOOP
RT:
JBC TI,L0;
PUSH ACC
PUSH PSW
CLR RI;
MOV A,SBUF
MOV R2,A;
POP PSW
POP ACC
ACALL DISPLAY1
L0:
RETI
DISPLAY:
MOV DPTR,#TAB
MOV A,R5
MOVC A,@A+DPTR
MOV DPTR,#1110000000000100B
MOVX @DPTR,A
MOV DPTR,#1110000000000010B
MOV A,#00010000B
MOVX @DPTR,A
ACALL DELAY5MS
RET
DISPLAY1:
MOV DPTR,#TAB
MOV A,R2
MOVC A,@A+DPTR
MOV DPTR,#1110000000000100B
MOVX @DPTR,A
MOV DPTR,#1110000000000010B
MOV A,#00001000B
MOVX @DPTR,A
ACALL DELAY5MS
RET
DELAY5MS:
MOV R4,#250
MOV R5,#10
L6: DJNZ R4,$
DJNZ R5,L6
RET
TAB:DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH,77H,7CH,39H,5EH,79H,71H
DONE:
END
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