dpy.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.

//dey.h
void print_n(BYTE value,BYTE pos);//print the value which is expect to be between
								  //0 and 9 at the position of pos.
void print_led(BYTE cod);
void print_num(WORD value);//print a unsigned int.