汇编程序代码：
ORG 0000H
AJMP MAIN
ORG 0030H
MAIN: MOV 30H,#0
MOV 31H,#0
MOV 32H,#0
MOV 33H,#0
MOV 34H,#0
ACALL DISP
ABC: MOV A,31H
CJNE A,#2,A1
MOV A,32H
CJNE A,#4,A1
AJMP MAIN
A1: INC 34H
ACALL DELAY
ACALL DISP
MOV A,34H
CJNE A,#9,ABC
INC 33H
MOV 34H,#0
MOV A,33H
CJNE A,#6,ABC
INC 32H
MOV 33H,#0
MOV 34H,#0
ACALL DELAY
ACALL DISP
MOV A,32H
CJNE A,#10,ABC
INC 31H
MOV 34H,#0
MOV 32H,#0
MOV 33H,#0
ACALL DELAY
ACALL DISP
MOV A,32H
CJNE A,#10,ABC
AJMP MAIN
DISP: MOV R0,#30H
MOV 41H,#5
M1: MOV DPTR,#TAB
MOV A,@R0
MOVC A,@A+DPTR
MOV 40H,#8
M0: RLC A
MOV P2.7,C
CLR P2.6
SETB P2.6
DJNZ 40H,M0
INC R0
DJNZ 41H,M1
RET
DELAY: MOV R0,#15 ;为了实验方便调快了速度，实际使用时把这段替换成1s的延时程序就行
DEL2: MOV R1,#10
DEL1: MOV R2,#7DH
DEL0: NOP
NOP
DJNZ R2,DEL0
DJNZ R1,DEL1
DJNZ R0,DEL2
RET
TAB: DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,67H
END
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