keyboard.h

我做的畢業設計,用AT89S51 控制LCD1602作為顯示. DS1302時鐘芯片顯示時間,DS18B20測量溫度,還有4X4的鍵盤驅動.實現了一個計算功能.可以用PROTUES 仿真軟件仿真,當時

#ifndef _KEY_16_H_
#define _KEY_16_H_
#include"reg51.h"
#define uchar unsigned char
#define uint  unsigned int 


//#define NOKEY 	 0xff
//uchar   Kbscan(void);
//void	key_to_led_display(void);
//void	Delay_Ms2(uchar  i);
unsigned char Keyboard(void);



#define KEY_NOTHING       'w'
#define KEY_FUNCTION      'v'
#define EQUAL			  '='
#define ZERO              0
#define ONE               1
#define TWO               2
#define THREE			  3
#define FOUR			  4
#define FIVE			  5
#define SIX				  6 
#define SEVEN             7
#define EIGHT             8
#define NINE              9
#define ADD               '+'
#define DEC               '-'
#define MUL               '*'
#define DIV               '/'
#endif