楼 主:灵犀 2003年4月23日10:48

 求助
我需要在经过AD采样来的三路数据中选择一路在一特定范围内的数据用数码管显示出来，部
分程序如下，我在其中一路加输入电压，其他两路不加输入，结果是不论在三个通道的哪一
个加输入电压，显示的都是0***。
                  if((((float)AD[3]/51.0)>  0.5) && (((float)AD[3]/51.0)  <5))
        
         {
               x=((float)AD[3]*100/51.0);        
        
            send_7219_2(0X03,x%10);
            send_7219_2(0X02,(x/10)%10);
            send_7219_1(0X03,x/100);
            send_7219_1(0X02,0);
        }
        else
        {
        if((((float)AD[2]/51.0)>  0.5) && (((float)AD[2]/51.0)  <=5))
        
            {
                y=(float)AD[2]*1000/51.0;
                           send_7219_2(0X03,y%10);
                send_7219_2(0X02,(y/10)%10);
                send_7219_1(0X03,(y/100)%10);
                send_7219_1(0X02,y/1000);
            }
                
               else
             { 
                z=((float)AD[4]*10/51.0);    
    
                send_7219_2(0X03,z%10);
                send_7219_2(0X02,z/10);
                send_7219_1(0X03,0);
                send_7219_1(0X02,0);
            }

}