看看

看看

这个神马原理呢，求解释

额，看看

我也看看

贴个视频看下效果啊

试下这样改#include <REG52.h> #define DY_PORT  P0 sbit  DY_KEY  =  P3 ^ 2; unsigned char table[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};void delay (unsigned int a){  unsigned int i; while( --a != 0){  for(i = 0; i < 600; i++);   }            }void main(void){ unsigned char c,b; DY_KEY = 1; DY_PORT = 0xff; while(1){  for(b=0;b<8;b++)  {  if(DY_KEY == 0){    delay(20);    if(DY_KEY == 0){ c++; if(c==8) { c=0;          }    DY_PORT = table[c];    while(DY_KEY == 0);   }  }  } }}

:shy: