h1a.c

来自「51单片机程序C和汇编」· C语言 代码 · 共 25 行

#include <reg51.h>

void delay()
{
  unsigned int i;

  for (i=0; i<20000; i++) {}
}

void main()
{
  unsigned char index;
  unsigned char LED;

  while (1) {
    LED = 1;
    for (index=0; index < 8; index++) {
      P1 = LED;
      LED <<= 1;
      delay();
    }
  }
}