Question

一位数码管连在51单片机上，按键后数码管加1，按一下加1.怎样用汇编语言编写，求程序非常感谢

Answer 1

Key BIT P0.0
BRepons BIT 20H.0
ORG 0000H
AJMP Start
ORG 0030H
;************************
Start: MOV DPTR,#TAB
MOV 30H,#0

Main: MOV A,30H
MOVC A,@A+DPTR
MOV P1,A
JB Key,L1
CALL Delay
JB Key,Main
JB BRepons,Main
SETB BRepons
INC 30H
MOV A,30H
CJNE A,#10,Main
AJMP Start
L1: CLR BRepons
AJMP Main
;*************************
Delay: MOV R6,#50
L2: MOV R7,#100
DJNZ R7,$
DJNZ R6,L2
RET
TAB: DB 0C0H,0F9H,0A4H,0B0H,99H
DB 92H,82H,0F8H,80H,90H
END
这是共阳的数码管，记得，仿真的时候最小系统不用也没事，我懒的画