流水灯的设计1.c

这是本人在学习51单片机时练习的C程序 [e-mail]

#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long

void delay400ms(void)
{
uchar TempA=5;
uint TempB;
while(TempA--)
 {
TempB=7269;
while(TempB--);
 };
}


void main(void)
{
  while(1)
    {
	 P1=0xff;
	 delay400ms();
	 delay400ms();
	 P1=0x00;
	 delay400ms();
	 delay400ms();
	 }
}