根据图片连接电路51单片机proteus汇编语言仿真4位数码管静态显示
MAIN: MOV A,#0FFH
MOV DPTR,#0000H
MOVX @DPTR,A
MOV DPTR,#0001H
MOVX @DPTR,A
MOV DPTR,#0002H
MOVX @DPTR,A
MOV DPTR,#0003H
MOVX @DPTR,A
MOV R7,#0H
LOOP: INC R7
MOV A,R7
CJNE A,#10,L1
MOV R7,#0H
CLR A
L1: CALL DECODE
MOV DPTR,#0000H
MOVX @DPTR,A
CALL DELAY
INC R7
MOV A,R7
CJNE A,#10,L2
MOV R7,#0H
CLR A
L2: CALL DECODE
MOV DPTR,#0001H
MOVX @DPTR,A
CALL DELAY
INC R7
MOV A,R7
CJNE A,#10,L3
MOV R7,#0H
CLR A
L3: CALL DECODE
MOV DPTR,#0002H
MOVX @DPTR,A
CALL DELAY
INC R7
MOV A,R7
CJNE A,#10,L4
MOV R7,#0H
CLR A
L4: CALL DECODE
MOV DPTR,#0003H
MOVX @DPTR,A
CALL DELAY
JMP LOOP
DECODE: MOV DPTR,#TAB
MOVC A,@A+DPTR
RET
DELAY: MOV R5,#00H
D1: MOV R6,#0H
DJNZ R6,$
DJNZ R5,D1
RET
TAB: DB 0C0H,0F9H,0A4H,0B0H,099H
DB 092H,082H,0F8H,080H,090H
END