//8个发光管演示出8位二进制数累加过程

#include <intrins.h>
#include <reg52.h>

#define uint unsigned int
#define uchar unsigned char

void delay(uint);

uchar temp,temp2;

void main()
{
 
temp=0xff;
temp2=0x0;

P1=temp;

while(1)
{
 delay(30);
 temp2++;
 P1=~temp2;
}
}

void delay(uint z)
{
uint x, y;
for(x=z;x>0;x--)
 for(y=765;y>0;y--) {}
}