数字.c

简单的熟悉数码管显示程序以及基本的按键操作

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar LED[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};	//段码值
uchar code Scan_con[8]={0xfe,0xfd,0xfb,0xf7};
uchar Buff[4]={0};
uchar k,m;
//
//
void Delayms(uint n)
{
	uint i,j;
	for(i=0;i<n;i++)
	for(j=0;j<120;j++);
}
//
//
void Display()
{
	uchar i;
	for(i=0;i<4;i++)
	{
		P0=0x00;
		P0=LED[Buff[3-i]];
		P3=Scan_con[i];
		Delayms(3);
	}
}
void Huancun()
{
	k++;
	if(k==10)
	k=0;
	Buff[3]=Buff[2];
	Buff[2]=Buff[1];
	Buff[1]=Buff[0];
	Buff[0]=k;	
}
//
//
void main()
{
	while(1)
	{
		Huancun();
		for(m=0;m<80;m++)
		Display();
	}
}