if(t==10||key==KEY0_PRES||key==WKUP_PRES)  //WKUP/KEY1°´ÏÂÁË,»òÕ߶¨Ê±Ê±¼äµ½ÁË
  {   
    adcx=DAC_GetDataOutputValue(DAC_Channel_1);//??????DAC??
   LCD_ShowxNum(124,150,adcx,4,16,0);      //ÏÔʾDAC¼Ä´æÆ÷Öµ
   temp=(float)adcx*(3.3/4096);   //µÃµ½DACµçѹֵ
   adcx=temp;
    LCD_ShowxNum(124,170,temp,1,16,0);      //ÏÔʾµçѹֵÕûÊý²¿·Ö
    temp-=adcx;
   temp*=1000;
   LCD_ShowxNum(140,170,temp,3,16,0X80);  //ÏÔʾµçѹֵµÄСÊý²¿·Ö
    adcx=Get_Adc_Average(ADC_Channel_1,10);  //µÃµ½ADCת»»Öµ   
   temp=(float)adcx*(3.3/4096);   //µÃµ½ADCµçѹֵ
   adcx=temp;
    LCD_ShowxNum(124,190,temp,1,16,0);      //ÏÔʾµçѹֵÕûÊý²¿·Ö
    temp-=adcx;
   temp*=1000;
   LCD_ShowxNum(140,190,temp,3,16,0X80);  //ÏÔʾµçѹֵµÄСÊý²¿·Ö
   LED0=!LED0;   
   t=0;
  }