51单片机4个io控制十六个led

正文摘要:

#include "reg51.h" typedef unsigned char u8; typedef unsigned int u16; u8 a; u8 HC[]={0x00,0x10,0x20,0x30,0x40,0x50,0x60,0x70,0x80,0x90,0xA0,0xB0,0xC0,0xD0,0xE0,0xF0}; void delay(u16 i) { &nbs ...