1255.c

来自「51单片机C程序」· C语言 代码 · 共 51 行

//用定时器以间隔500MS在6位数码管上
//依次显示0、1、2、3、C、D、E、F，重复。
#include<reg52.h>
#include<intrins.h>
#define uc unsigned char
sbit duans=P2^6;
sbit weis=P2^7;
unsigned int i,j,num;
uc a,b,c;

uc code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};


void main()
{
	EA=1;
	ET1=1;
	TMOD=0x10;
	TH1=(65536-50000)/256;
    TL1=(65536-50000)%256;
	TR1=1;
	while(1)
	  {
        if(num==10)
	   {
			num=0;	
            P0=table[a];
			duans=1;
			duans=0;
			P0=0xc0;  //WE1为低电平，其余位为高电平;位选控制亮或灭	
		    weis=1;
			weis=0;
            a++;
			if(a==16)
			a=0;

        }
		
		
	  }
}void time1() interrupt 3 using 1
{
    TH1=(65536-50000)/256;
    TL1=(65536-50000)%256;
	num++;
}