程序阅读:请给下面空格对应的程序添加注释 #include
sbit SMG1=P1^0; sbit SMG2=P1^1; sbit SMG3=P1^2; sbit SMG4=P1^3; // (1) unsigned char code tab[13]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; void delay(unsigned int n) { unsigned char i,j; for(i=n;i>0;i--) for(j=0;j<250;j++); } void main() {p1=1; smg4=0; smg1=1; // (2) p0=tab[i+3]; // (3) smg2=1; smg3=1; for(j=0; i=>=9 ;i=0;} // (4) } }