#include?
#define?uchar?unsigned?char
#define?uint?unsigned?int
sbit?BEEP?=?P3^7;

uchar?code?DSY_CODE[]=
{
?	0xc00xf90xa40xb00x990x920x820xf80x800x900x880x830xc60xa10x860x8e0x00
};
uchar?Pre_KeyNO?=?16KeyNO?=?16;

void?DelayMS（uint?ms）
{
?	uchar?t;
	while（ms--）
	{
	?	for（t=0;t<120;t++）;
	}
}

void?Keys_Scan（）
{
?	uchar?Tmp;
	P1?=?0x0f;
	DelayMS（1）;
	Tmp?=?P1?^?0x0f;
	switch（Tmp）
	{
	?	case?1:?KeyNO?=?0;?break;
		case?2:?KeyNO?=?1;?break;
		case?4:?KeyNO?=?2;?break;
		case?8:?KeyNO?=?3;?break;
		default:?KeyNO?=?16;
	}
	P1?=?0xf0;
	DelayMS（1）;
	Tmp?=?P1?>>?4?^?0x0f;
	switch（Tmp）
	{
	?	case?1:?KeyNO?+=?0;?break;
		case?2:?KeyNO?+=?4;?break;
		case?4:?KeyNO?+=?8;?break;
		case?8:?KeyNO?+=?12;
	}
}

void?Beep（）
{
?	ucha

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2009-11-26?22:42??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\
?????目錄???????????0??2009-08-10?10:07??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\code\
?????文件????????3429??2009-08-10?10:06??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\code\key-smg
?????文件????????1103??2009-08-10?10:06??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\code\key-smg.c
?????文件??????????46??2009-08-10?10:06??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\code\key-smg.lnp
?????文件????????3498??2009-08-10?10:06??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\code\key-smg.LST
?????文件????????5943??2009-08-10?10:06??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\code\key-smg.M51
?????文件????????3770??2009-08-10?10:06??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\code\key-smg.OBJ
?????文件????????1235??2009-08-10?10:07??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\code\key-smg.Opt
?????文件?????????486??2009-08-10?10:07??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\code\key-smg.plg
?????文件????????2162??2009-08-10?10:07??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\code\key-smg.Uv2
?????文件???????????0??2009-08-10?09:54??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\code\key-smg_Uv2.Bak
?????目錄???????????0??2009-11-26?22:42??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\Keil?C\
?????文件????????1428??2009-03-10?21:33??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\Keil?C\數(shù)碼管顯示4×4鍵盤矩陣按鍵
?????文件????????1091??2009-03-10?21:33??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\Keil?C\數(shù)碼管顯示4×4鍵盤矩陣按鍵.hex
?????文件???????49004??2009-03-10?21:30??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\Last?Loaded?數(shù)碼管顯示4×4鍵盤矩陣按鍵.DBK
?????文件???????48907??2009-03-10?21:32??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\數(shù)碼管顯示4×4鍵盤矩陣按鍵.DSN
?????文件?????????742??2009-08-10?10:07??17?數(shù)碼管顯示4×4鍵盤矩陣按鍵\數(shù)碼管顯示4×4鍵盤矩陣按鍵.PWI