ex4-1.c

来自「单片机的仿真实例!用的是Proteus作的,大家有需要的尽管下吧」· C语言 代码 · 共 45 行

#include <reg51.h>
#include <stdio.h>
unsigned int temp1;
void delay(unsigned int temp)//延时程序
{
  while(--temp);
}
void main()
{
        P2=255;//led is off
        while(1)
		{
            P2=0XFE;
			temp1=35000;
			delay(temp1);

			P2=0XFD;
			temp1=35000;
			delay(temp1);

			P2=0XFB;
			temp1=35000;
			delay(temp1);

			P2=0XF7;
			temp1=35000;
			delay(temp1);

			P2=0XEF;
			temp1=35000;
			delay(temp1);

			P2=0XDF;
			temp1=35000;
			delay(temp1);

			P2=0XBF;
			temp1=35000;
			delay(temp1);

			P2=0X7F;
			temp1=35000;
			delay(temp1);
		}
}