a.c

key-led 矩阵键盘输入号码 数码管显示（6位）

#include<reg52.h>

#define uchar unsigned char
#define uint unsigned int

sbit dula=P2^6;
sbit wela=P2^7;

uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71,0};
uchar code tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf};

uchar num,temp;	 uchar key;
uchar count=0;
uchar data lednum[6]={17,17,17,17,17,17};

void delay(uint z)
{
	uint x,y;
	for(x=z;x>0;x--)
		for(y=110;y>0;y--);
}
void display(uchar data* a);
uchar keyscan();


void main()
{
	while(1)
	{
		key=keyscan();
		if(key!=17)
		{
			if(count==6)count=0;
			lednum[count]=key;	
			count++;		
		}

		display(lednum);	//数组参数这样写进去就可以

	}

		
}

void display(uchar data* a)
{
	uchar i;
	for(i=0;i<6;i++)
	{
		dula=1;
		P0=table[a[i]-1];
		dula=0;
		P0=0xff;
		wela=1;
		P0=tab[i];
		wela=0;
		delay(1);
	}

	
			
}


uchar keyscan()
{
			num=17;
			P3=0xfe;
			temp=P3;
			temp=temp&0xf0;
			while(temp!=0xf0)
				{
					delay(5);
					temp=P3;
					temp=temp&0xf0;
					while(temp!=0xf0)
					{
						temp=P3;
					switch(temp)
						{
							case 0xee:num=2;
								break;
							case 0xde:num=3;
								break;
							case 0xbe:num=4;
								break;
							case 0x7e:num=1;
								break;
						}
					while(temp!=0xf0)
						{
							temp=P3;
							temp=temp&0xf0;
						}
					}
				}

			P3=0xfd;
			temp=P3;
			temp=temp&0xf0;
			while(temp!=0xf0)
				{
					delay(5);
					temp=P3;
					temp=temp&0xf0;
					while(temp!=0xf0)
					{
						temp=P3;
					switch(temp)
						{
							case 0xed:num=5;
								break;
							case 0xdd:num=6;
								break;
							case 0xbd:num=7;
								break;
							//case 0x7d:flag1=1;
							//	break;
						}
					while(temp!=0xf0)
						{
							temp=P3;
							temp=temp&0xf0;
						}
					}
				}


			P3=0xfb;
			temp=P3;
			temp=temp&0xf0;
			while(temp!=0xf0)
				{
					delay(5);
					temp=P3;
					temp=temp&0xf0;
					while(temp!=0xf0)
					{
						temp=P3;
					switch(temp)
						{
							case 0xeb:num=8;
								break;
							case 0xdb:num=9;
								break;
							case 0xbb:num=10;
								break;
						//	case 0x7b:flag2=1;
							//	break;
						}
					while(temp!=0xf0)
						{
							temp=P3;
							temp=temp&0xf0;
						}
					}
				}

return num;

}