电压.c

自己做的数字电压表。有用的

#include<reg51.h>
#define uchar unsigned char
#define uint  unsigned int
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71,0};uint aa;
void display(uint bb);
void delay(uint z);
sbit start=P3^0;
sbit over=P3^1;
void main()
{
  while(1)
     {
	    start=0;
		start=1;
		start=0;
		while(1)
		{
		     if(over==1)
	  	      {
		       aa=P0;
			   break;
		      }
		}
	    display(aa);  
     }
}
void display(uint bb)
{
     uchar shi,ge;
     bb=(bb/5);
	 shi=bb/10;
	 ge=bb%10;
	 P2=0xdf;
	 P1=table[ge];
	 delay(10);
	 P2=0xef;
	 P1=table[shi]|0x80;
	 delay(10);
}
void delay(uint z)

{
	uint x,y;
	for(x=z;x>0;x--)
		for(y=110;y>0;y--);
}