123.c

数码显示12345678

#include <reg51.h> 
#define uchar unsigned char
void delay10ms() 
// 延时子程序 
{ unsigned char i,j; 																									  
	for(i=0;i<10;i++)
		 for(j = 0; j < 254; j++);
}
void main()							 						 
{
uchar disp[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar select[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
uchar disp_data;
	while(1)							 
	{for(disp_data=0;disp_data<8;disp_data++)
		{P0=0xff;
		if(disp_data<4)
		P1=disp[disp_data+1];
		else P2=disp[disp_data+1];
		P0=select[disp_data];
		delay10ms();
		}
	}
}