type.h

我自己整理的单片机4*4键盘最简扫描算法

typedef unsigned char 	UCHAR;
typedef unsigned int	UINT;
typedef unsigned char	BOOL;
typedef unsigned long	ULONG;

#define TRUE	1
#define FALSE	0

#define WORDHI(r)	(r>>8)
#define WORDLO(r)	(r&0xff)