part2.1_5.c

新概念51单片机C语言教程.入门、提高、开发

#include <reg52.h>    		//52系列单片机头文件
#define uchar unsigned char
#define uint unsigned int 
sbit dula=P2^6;		//申明U1锁存器的锁存端
sbit wela=P2^7;
sbit led1=P1^0;

uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
void delayms(uint xms);
void display(uchar,uchar);
uchar num,num1,num2,shi,ge;
void main()
{	 TMOD=0X11;
	 TH0=(65536-45872)/256;
	 TL0=(65536-45872)%256;

     TH1=(65536-45872)/256;
	 TL1=(65536-45872)%256;
	 EA=1;
	 ET0=1;
	 ET1=1;
	 TR0=1;
	 TR1=1;
	 while(1)
	 {
	     display(shi,ge);

	 }

  
}
void display(uchar shi,uchar ge)
{
  dula=1;
  P0=table[shi];
  dula=0;
  P0=0xff;
  wela=1;
  P0=0XFE;
  wela=0;
  delayms(5);

  dula=1;
  P0=table[ge];
  dula=0;
  P0=0xff;
  wela=1;
  P0=0xfd;
  wela=0;
  delayms(5);



}
void delayms(uint xms)				
{
	uint i,j;
	for(i=xms;i>0;i--)		      //i=xms即延时约xms毫秒
		for(j=110;j>0;j--);
}
void T0_time() interrupt 1
{
   TH0=(65536-45872)/256;
   TL0=(65536-45872)%256;
   num++;
   if(num1==4)
   {
		num1=0;
		led1=~led1;
   }
}
void T1_time() interrupt 3
{
     TH1=(65536-45872)/256;
	 TL1=(65536-45872)%256;
	 num2++;
	 if(num2==20)
	 {
	    num2=0;
		num++;
		if(num==60)
		   num=0;
		 shi=num/10;
		 ge=num%10;
		     
	 }
}