zuo.h

凌阳驱动HD7279键盘（4×4

#ifndef	__ZUO_h__
#define	__ZUO_h__
//	write your header here
extern int keyfind1(void);
extern int keyfind(void);
extern void send7279(unsigned int read);
extern unsigned int read7279(void);
extern void delay (unsigned long int us);

#endif