#define uint unsigned int
#define uchar unsigned char
sbit dula=P2^6;
sbit wela=P3^7;
uint numone,numtwo;
uchar temp,one,two,three,four,five,six;
uchar code list[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
void delay(uint z)
{
uint x,y;
for(x=100;x>0;x--)
for(y=z;y>0;y--);
}
void shuma(uchar a,uchar b,uchar c,uchar d,uchar e,uchar f)
{
if(a==0)
P0=0xff;
else
{
dula=1;
P0=list[a];
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
wela=0;
delay(1);
}
if(b==0)
P0=0xff;
else
{
dula=1;
P0=list[b];
dula=0;
P0=0xff;
wela=1;
P0=0xfd;
wela=0;
delay(1);
}
if((c==0)&&(b==0))
P0=0xff;
else
{
dula=1;
P0=list[c];
dula=0;
P0=0xff;
wela=1;
P0=0xfb;
wela=0;
delay(1);
}
if(d==0)
P0=0xff;
else
{
dula=1;
P0=list[d];
dula=0;
P0=0xff;
wela=1;
P0=0xf7;
wela=0;
delay(1);
}
if((e==0)&&(d==0))
P0=0xff;
else
{
dula=1;
P0=list[e];
dula=0;
P0=0xff;
wela=1;
P0=0xef;
wela=0;
delay(1);
}
if((f==0)&&(e==0)&&(d==0))
P0=0xff; //注意此处是为了解决第十个按键按下时，十位和个位不显示的问题
else
{
dula=1;
P0=list[f];
dula=0;
P0=0xff;
wela=1;
P0=0xdf;
wela=0;
delay(1);
}
}
void init()
{
one=numone%10; two=numone%100/10;
three=numone/100;
four=numtwo%10; five=numtwo%100/10;
six=numtwo/100; }
void main()
{
while(1)
{
//numone表示第几个按下
//numtwo表示按下的平方
P3=0xfe;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(5);
if(temp!=0xf0)
{
switch(temp)
{
case 0xe0: numone=1;numtwo=1;P1=0xfe;break;
case 0xd0: numone=2;numtwo=4;P1=0xfd;break;
case 0xb0: numone=3;numtwo=9;P1=0xfc;break;
case 0x70: numone=4;numtwo=16;P1=0xfb;break;
} //下面两行放于此处数码管只有在键盘按下时才会显示
}
}
init();
shuma(three,two,one,six,five,four);
P3=0xfd;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(5);
if(temp!=0xf0)
{
switch(temp)
{
case 0xe0: numone=5;numtwo=25;P1=0xfa;break;
case 0xd0: numone=6;numtwo=36;P1=0xf9;break;
case 0xb0: numone=7;numtwo=49;P1=0xf8;break;
case 0x70: numone=8;numtwo=;P1=0xf7;break;
} //下面两行放于此处数码管只有在键盘按下时才会显示
}
}
init();
shuma(three,two,one,six,five,four);
P3=0xfb;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(5);
if(temp!=0xf0)
{
switch(temp)
{
case 0xe0: numone=9;numtwo=81;P1=0xf6;break;
case 0xd0: numone=10;numtwo=100;P1=0xf5;break;
case 0xb0: numone=11;numtwo=121;P1=0xf4;break;
case 0x70: numone=12;numtwo=144;P1=0xf3;break;
} //下面两行放于此处数码管只有在键盘按下时才会显示
}
}
init();
shuma(three,two,one,six,five,four);
P3=0xf7;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(5);
if(temp!=0xf0)
{
switch(temp) //用二极管指示按下第几个按键
{
case 0xe0: numone=13;numtwo=169;P1=0xf2;break;
case 0xd0: numone=14;numtwo=196;P1=0xf1;break;
case 0xb0: numone=15;numtwo=225;P1=0xf0;break;
case 0x70: numone=16;numtwo=256;P1=0xef;break;
} //下面两行放于此处数码管只有在键盘按下时才会显示
}
}
init();
shuma(three,two,one,six,five,four);
}
}