实验.c

来自「51单片机入门级资料。流水灯」· C语言 代码 · 共 38 行

#include<reg52.h>
#define uchar unsigned char
sbit duan=P2^6;
sbit wei=P2^7;
int i=0,j=0;
uchar duantable[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};    //0-F共阴极数码管代码

uchar weitable[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};	//0-8位选代码

void display(uchar i,uchar j)
{
	P0=0xff;
	wei=1;
	wei=0;
	P0=duantable[i];
	duan=1;
	duan=0;
	P0=weitable[j];
	wei=1;
	wei=0;

}

void main()
{
	while(1)
	{
	 	if(i==8)
	 	 i=0;
		if(j==8)
	 	 j=0;
		display(i,j);
		i++;
		j++;
	}
	
}