12c.c

51单片机电子钟上传的只是c源程序 pcb图可以浏览zyw19987.51.com

#include<AT89X52.H>
unsigned char count;
unsigned char code table1[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xbf};
unsigned char code table2[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
unsigned char table3[]={0,0,10,0,0,10,0,0};
sbit k1=P1^0;
sbit k2=P1^1;
sbit k3=P1^2;
sbit k4=P1^3;
unsigned char c,j,s,m,h,b;
void delay(int i);
void keyscan();
void main(void)
{
	EA=1;
	ET0=1;
	TMOD=0X01;
	TR0=1;
	TH0=15600/256;
	TL0=15600%256;
	while(1)
	{
	keyscan();
	 	P0=table1[table3[c]];
		P2=table2[c];
		c++;
		delay(100);
		if(c==8)
		c=0;

	}
}
void delay(int i)
{
	while(i--);
}
void keyscan()
{
	if(k1==0)
	{
	delay(100);
	if(k1==0)
	j++;
	if(j==4)
	j=0;
	while(k1==0);
	}
	switch(j)
	{
	case 1:
	if(k4==0)
	{
  	delay(100);
		if(k4==0)
		{
		s++;
		if(s==60)
			{
			s=0;
			}
		table3[0]=s%10;
		table3[1]=s/10;
		while(k4==0);
		}
	 }
	 break;
	 case 2:
	if(k3==0)
	{
	delay(100);
		if(k3==0)
		{
			m++;
			if(m==60)
			{
			m=0;
			 }
			 table3[3]=m%10;
			 table3[4]=m/10;
			 while(k3==0);
	 	}
	}
	break;
	case 3:
	if(k2==0)
	{
		 delay(100);
		 if(k2==0)
		 {
			 h++;
			 if(h==24)
			 h=0;
			 table3[6]=h%10;
			 table3[7]=h/10;
			 while(k2==0);
	 	}
	 }
	 break;
	 }
	 }
void zhongduan(void)interrupt 1 using 0//中断子程序
	{
	TH0=15600/256;
	TL0=15600%256;
	b++;
	if(b==20)
	{
		b=0;
		s++;
		if(s==60)
		{
			s=0;
			m++;
			if(m==60)
			{
				m=0;
				h++;
				if(h==24)
					h=0;
			}
		}
	}
	table3[0]=s%10;
	table3[1]=s/10;
	table3[3]=m%10;
	table3[4]=m/10;
	table3[6]=h%10;
	table3[7]=h/10;
	}