dyn_led.c

来自「51单片机及其C语言程序开发实例光盘资料.rar」· C语言 代码 · 共 38 行

#include "reg51.h"

unsigned char table[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00};

void IO_Init()
{
	P1 = 0x00;
	P2 = 0x00;
	}
	
void Delay(unsigned int i)
{
	unsigned int j;
	for(;i>0;i--)
		for(j=0;j<100;j++);
	}
	
void Disp1234()
{
	unsigned int i;
	unsigned int temp=0xfe;
	for(i=1;i<5;i++)
	{
		P2 = temp;
		P1 = table[i];
		Delay(20);
		temp = temp << 1;
		}
	}

void main()
{
	IO_Init();
	while(1)
	{
		Disp1234();
		}
	}