#include
#define?uchar?unsigned?char
unsigned?char?code?tab[20]={0xc00xf90xa40xb0
							0x990x920x820xd8
							0x800x900x880x83
							0xc60xa10x860x8e
							0xc70xc10x8c0xc8};//0~9，A~F，LUPn
char?i;
sbit?P2_7=P2^7;
void?delay（int?z）;//延時(shí)函數(shù)
	main（）{
	uchar?rr;//列號(hào)
	uchar?cc;//行號(hào)
	uchar?temp;
	uchar?i;//數(shù)組元素變量
	P2_7=0;
	P3=0xf0;//列號(hào)檢測(cè)初始化
	if（P2_7!=0||（P3&0xf0）!=0xf0）//有鍵按下
	{	temp=P3;
		delay（1）;
		if（P2_7!=0||（P3&0xf0）!=0xf0）//確定有鍵按下
		{
			switch（temp）
			{
				case?0x70:rr=1;break;//列號(hào)
				case?0xB0:rr=2;break;
				case?0xD0:rr=3;break;
				case?0xE0:rr=4;break;
			}
			P2_7=1;
			P3=0x0f;//行號(hào)檢測(cè)初始化
			temp=P3;
			switch（temp）
			{
				case?0x07:cc=1;break;//行號(hào)
				case?0x0B:cc=2;break;
				case?0x0D:cc=3;break;
				case?0x0E:cc=4;break;
				default?:?cc=5;break;
			}		
			i=（cc-1）*4+rr-1;
			P0=tab[i];
			delay（5）;
		}
	}
}
void?delay（int?z）
{??int?xy;
??for（x=z;x>0;x--）
??for（y=5000;y>0;y--）;
}

?屬性????????????大小?????日期????時(shí)間???名稱(chēng)
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?????文件????????759??2008-11-06?13:23??實(shí)驗(yàn)5Keyboard\STARTUP.OBJ

?????文件???????3446??2008-11-06?13:23??實(shí)驗(yàn)5Keyboard\Keyboard.LST

?????文件??????10695??2008-11-06?13:23??實(shí)驗(yàn)5Keyboard\STARTUP.LST

?????文件??????99150??2008-11-06?13:23??實(shí)驗(yàn)5Keyboard\Keyboard.DSN

?????文件???????2162??2008-11-06?13:23??實(shí)驗(yàn)5Keyboard\Keyboard.Uv2

?????文件???????1031??2008-11-05?23:13??實(shí)驗(yàn)5Keyboard\Keyboard.Opt

?????文件???????2972??2008-11-06?13:23??實(shí)驗(yàn)5Keyboard\Keyboard.OBJ

?????文件???????3210??2008-11-06?13:23??實(shí)驗(yàn)5Keyboard\Keyboard

?????文件???????6376??2008-11-06?13:23??實(shí)驗(yàn)5Keyboard\STARTUP.A51

?????文件????????374??2008-11-06?13:23??實(shí)驗(yàn)5Keyboard\Keyboard.plg

?????文件???????1036??2008-11-05?22:52??實(shí)驗(yàn)5Keyboard\Keyboard.c

?????文件?????????49??2008-11-06?13:23??實(shí)驗(yàn)5Keyboard\Keyboard.lnp

?????文件???????6065??2008-11-06?13:23??實(shí)驗(yàn)5Keyboard\Keyboard.M51

?????文件????????677??2008-11-06?13:23??實(shí)驗(yàn)5Keyboard\Keyboard.hex

?????文件????????963??2008-11-06?13:23??實(shí)驗(yàn)5Keyboard\Keyboard.PWI

?????目錄??????????0??2008-11-03?00:22??實(shí)驗(yàn)5Keyboard

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???????????????138965????????????????????16