迷你实例__C51_数码管

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#include <REGX52.H>


void Delay(int xms)
{
	while(xms--){
		unsigned char j;
		j = 278;
		while (--j);

	}
}

void smgca(locating,number){
		P0 = 0xFF;
		switch(locating)
		{
			case 1:P2=0x01;break;
			case 2:P2=0x02;break;
			case 3:P2=0x04;break;
			case 4:P2=0x08;break;
			case 5:P2=0x10;break;
			case 6:P2=0x20;break;
			case 7:P2=0x40;break;
			case 8:P2=0x80;break;
		}
	  switch(number)
		{
			case 0:P0 = 0xC0;break;
			case 1:P0 = 0xF9;break;
			case 2:P0 = 0xA4;break;
			case 3:P0 = 0xB0;break;
			case 4:P0 = 0x99;break;
			case 5:P0 = 0x92;break;
			case 6:P0 = 0x82;break;
			case 7:P0 = 0xF8;break;
			case 8:P0 = 0x80;break;
			case 9:P0 = 0x90;break;
}

		Delay(3);
		
}
void main(){
	int i;
	while(1){	
		for(i = 1;i<10;i++){
			smgca(i,i);
		}
	}
}           

#include <REGX52.H>


void Delay(int xms)
{
	while(xms--){
		unsigned char j;
		j = 278;
		while (--j);

	}
}

void smgca(locating,number){
		P0 = 0xFF;
		switch(locating)
		{
			case 1:P2=0x01;break;
			case 2:P2=0x02;break;
			case 3:P2=0x04;break;
			case 4:P2=0x08;break;
			case 5:P2=0x10;break;
			case 6:P2=0x20;break;
			case 7:P2=0x40;break;
			case 8:P2=0x80;break;
		}
	  switch(number)
		{
			case 0:P0 = 0xC0;break;
			case 1:P0 = 0xF9;break;
			case 2:P0 = 0xA4;break;
			case 3:P0 = 0xB0;break;
			case 4:P0 = 0x99;break;
			case 5:P0 = 0x92;break;
			case 6:P0 = 0x82;break;
			case 7:P0 = 0xF8;break;
			case 8:P0 = 0x80;break;
			case 9:P0 = 0x90;break;
}

		Delay(3);
		
}
void main(){
	int i;
	while(1){	
		for(i = 1;i<10;i++){
			smgca(i,i);
		}
	}
}           

#include <REGX52.H>



unsigned char g_number[10]={
	0xC0,
	0xF9,
	0xA4,
	0xB0,
	0x99,
	0x92,
	0x82,
	0xF8,
	0x80,
	0x90
};
unsigned char g_local[8]={
	0x01,
	0x02,
	0x04,
	0x08,
	0x10,
	0x20,
	0x40,
	0x80,
};


void main(){
	int i=0;
	int l=0;
	int nu[6];
	int n=0;

	unsigned int count=0;

	while(1){	
		for(i = 1;i<999999;i++){  	

			nu[0]=i%10;
			nu[1]=i/10%10;
			nu[2]=i/100%10;
			nu[3]=i/1000%10;
			nu[4]=i/10000%10;
			nu[5]=i/100000%10; 

			count+=1;

			if (count>2){
				count=0;
			}
			if(count==1){				

				P0 = 0xFF;
				P2= g_local[l];
				n=nu[5-l];
				P0= g_number[n];

				l+=1;  
			}
			if(l>=6){
				l=0;
			}

		}
	}
}