EEPW论坛

在设置端口的时候，如果不需要上拉电阻，只要不给后面的那个1打对钩就行了?需要的时候再打上对钩吗？

帮我看看这动态显示怎么老是出错类？
unsigned  table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
unsigned table1[]={
      0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
   0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f};
void delay(unsigned int x)
{
  unsigned int i,j;
  for(i=x;i>0;i--)
    for(j=2000;j>0;j--);
}
void display(unsigned char y)
{
                 P3_bit.no0=1;
   P1=table[y];
   P3_bit.no0=0;
   P1=0xff;
   P2=table1[y];
   delay(2000);
}

void  main(void)
{
 /* Start user code. Do not edit comment generated here */
  unsigned int w;
 
 while (1U)
 {
             for(w=0;w<16;w++)
             {
                display(w);
             }
 }
 /* End user code. Do not edit comment generated here */
}