frequency.txt

6位数码管显示的数字频率计

#include<reg51.h>

sbit p10=P1^0;
sbit p11=P1^1;
sbit p12=P1^2;
sbit p13=P1^3;
sbit p14=P1^4;
sbit p15=P1^5;

unsigned char cnt=20;
unsigned int count;
unsigned char shiwan;
unsigned char wan;
unsigned char qian;
unsigned char bai;
unsigned char shi;
unsigned char ge;
unsigned char wu;
unsigned char table[]={
							0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x67,0x60//0,1,2,3,4,5,6,7,8,9,-
					  };

void delay(unsigned int i)
{
	while(i--);	
}

void display()
{
		P1=0xfe;
		P0=table[ge];
		delay(300);//显示第1个数码管


		P1=0xfd;
		P0=table[shi];
		delay(300);//显示第2个数码管

		P1=0xfb;
		P0=table[bai];
		delay(300);//显示第3个数码管

		P1=0xf7;
		P0=table[qian];
		delay(300);//显示第4个数码管

		P1=0xef;
		P0=table[wan];
		delay(300);//显示第5个数码管
		
      	P1=0xdf;
		P0=table[shiwan];
		delay(300);//显示第6个数码管

		/*if(count>100000)
		 {  
		    P1=0x60;
			P0=table[wu];
			delay(300);
		  }*/  

}


void init()
{
		TMOD=0x59;//0101 1001,T1计数，T0定时
		TH0=0x3c;
   		TL0=0xb0;
		TH1=0xEC;//T1计数器溢出初值 
		TL1=0x78;
   		IE=0x82;
   		TR0=1;
		TR1=1;	
}




void main()
{
		init();
		P1=0xff;
		P0=0;//初始化显示
		while(1)
			{
				display();
			}

}



void T0_int() interrupt 1

{		
     	 cnt--;
		 TH0=0x3c;
		 TL0=0xb0;
		 if(cnt==0)
		 	{
					count=TH1*256+TL1;
					shiwan=count/100000;
					wan=(count-shiwan*100000)/10000;
					qian=(count-shiwan*100000-wan*10000)/1000;
					bai=(count-shiwan*100000-wan*10000-qian*1000)/100;
					shi=(count-shiwan*100000-wan*10000-qian*1000-bai*100)/10;
					ge=count-shiwan*100000-wan*10000-qian*1000-bai*100-shi*10;
					//wu=0x60;
					TH1=0;
					TL1=0;
					cnt=20;   //定时20次
			}
		 

}