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4键六位数显示程序
4键六位数显示程序 org 00hstart: MOV r4,#06h MOV r0,#30hclear: MOV @r0,#00h inc r0 djnz r4,clearl1: MOV r3,#0f7h ;扫描初值(P13=0) MOV r1,#00h ;取码指针l2: MOV a,r3 ;开始扫描 MOV p1,
4键六位数显示程序 org 00hstart: MOV r4,#06h MOV r0,#30hclear: MOV @r0,#00h inc r0 djnz r4,clearl1: MOV r3,#0f7h ;扫描初值(P13=0) MOV r1,#00h ;取码指针l2: MOV a,r3 ;开始扫描 MOV p1,
