SETB SECOND ;关第二位显示
POP PSW
POP ACC
RET
DELAY: ;延时1毫秒
PUSH PSW
SETB RS0
MOV R7,#50
D1: MOV R6,#10
D2: DJNZ R6,$
DJNZ R7,D1
DISPTAB:DB 28H,7EH,0a4H,64H,72H,61H,21H,7CH,20H,60H
END
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