#include "regx51.h"
Targetinit()
{P1_0=1;  //CS
 P1_4=1;  //鋒鳴器
 P1_5=1;  //LED
 P1_6=1;  //LED
 P1_7=1;  //LED
 P0_0=1;  //輸入
 P0_1=1;  //輸入
 P0_2=1;  //輸入
 P0_3=1;  //輸入
 P0_4=0;
 P0_5=0;
 P0_6=0;
 P0_7=0;
}