模板：4个数码管动态显示精简方法

unsigned char SMG[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
void disp(unsigned int j,k)
{
	P2=0XEF;        //P24数码管
	P0=SMG[j/10];
	delay(20);
	P0=0X00;
	P2=0XDF;        //P25数码管
	P0=SMG[j%10];
	delay(20);
	P0=0X00;
	P2=0XBF;        //P26数码管
	P0=SMG[k/10];    
	delay(20);
	P0=0X00;
	P2=0X7F;        //P27数码管
	P0=SMG[k%10];
	delay(20);
	P0=0X00;
}

char Tube[]={0xEF,0XDF,0XBF,0x7F};		//P24 25 26 27
unsigned char SMG[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
//分秒数码管上显示出来
void dispTime(char j,k)
{
	char t=0;
	char Time[4]={0};
   	 Time[0]=j/10;Time[1]=j%10;
	 Time[0]=k/10;Time[1]=k%10;
	for(t=0;t<4;t++){
		P2=Tube[t];
	    P0=SMG[Time[t]];
		delay(40);
		P0=0X00;
	}
}

 #define UC unsigned char
UC SMG[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
//函数3：数字1234
void num1234()
{
	P2=0XEF;    //P24显示
	P0=SMG[1];
	delay(40);
	P0=0X00;
	P2=0XDF;    //P25显示
	P0=SMG[2];    
	delay(40);
	P0=0X00;
	P2=0XBF;    //P26显示
	P0=SMG[3];
	delay(40);
	P0=0X00;
	P2=0X7F;    //P27显示
	P0=SMG[4];
	delay(40);
	P0=0X00;
}

 #define UC unsigned char
UC Tube[]={0XEF,0XDF,0XBF,0X7F};
UC Num[]={0x06,0x5b,0x4f,0x66};	 	//1234
//函数3：数字234
void num1234()
{
	UC N=0;
	for(N=0;N<4;N++){
	P2=Tube[N];
	P0=Num[N];
	delay(20);
	P0=0X00;
	}
}