单片机数码管显示0至7数字的程序
- 格式:doc
- 大小:21.00 KB
- 文档页数:2
ORG 0000H MAIN:
MOV R0,#11111110B
MOV R5,#8
LOOP3:
MOV R3,#255 LOOP2:
MOV R7,#0
MOV R2,#8
MOV A,R0
MOV R4,A
LOOP:
MOV A,R7
MOV DPTR,#TABLE MOVC A,@A+DPTR MOV P0,A
MOV P2,R4
LCALL DELAY MOV A,R4
RL A
MOV R4,A
INC R7
DJNZ R2,LOOP DJNZ R3,LOOP2
MOV A,R0
RR A
MOV R0,A
DJNZ R5,LOOP3 SJMP MAIN
TABLE:DB 0C0H,0F9H,0A4H,0B0H,099H,092H,082H,0F8H,080H,090H
DELAY:
MOV R1,#255
LOOP1:DJNZ R1,LOOP1
RET