general.h

51单片机的键盘扫描程序,当有键盘输入是,将在LED上显示,且蜂鸣器将发出相应的响声.

//general.h
#include<reg52.h>
#include<absacc.h>
#include<intrins.h>
#define BYTE unsigned char
#define WORD unsigned int
#define DATA P2
#define EAIO P1