text1.c

流水灯的左移右移

#include <reg52.h>  //为了使用P0这个符号，使编译器知道是指单片机的P0口
void delay02s() //延时0.2秒
{
  unsigned i,j,k;
  for(i=5;i>0;i--)
  for(j=5;j>0;j--)
  for(k=148;k>0;k--);
}
main()
{
while(1)  
{
  P3=0x0; 
  delay02s();
  P3=0x80;
  delay02s(); 
  P3=0xC0; 
  delay02s();
  P3=0xE0; 
  delay02s();
  P3=0xF0;
  delay02s();
  P3=0xF8;
  delay02s();
  P3=0xFC;
  delay02s();
  P3=0xFE;
  delay02s();
  P3=0xFF;
  delay02s();
  delay02s();
  P3=0xFF;
  delay02s();
  P3=0xFE;
  delay02s();
  P3=0xFC;
  delay02s();
  P3=0xF8;
  delay02s();
  P3=0xF0;
  delay02s();
  P3=0xE0;
  delay02s();
  P3=0xC0;
  delay02s();
  P3=0x80;
  delay02s();
  P3=0x0; 
  delay02s();
  }
  }