按下16个矩阵键盘依次在数码管上显示16的平方.docVIP

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按下16个矩阵键盘依次在数码管上显示1-16的平方

Proteus仿真原理图：

程序：

/*3,按下16个矩阵键盘依次在数码管上显示1-16的平方。如按下第一个显示1，第二个显示4... */

#includereg52.h

#defineucharunsignedchar

#defineuintunsignedint

ucharcodetable1[]={

0xfc,0x60,0xda,0xf2,0x66,

0xb6,0xbe,0xe0,0xfe,0xf6};

ucharcodetable2[]={0x1f,0x2f,0x37};

voiddelay(uint);

voidkeyscan();

voiddisplay(uint);

voidmain()

{

while(1)

{

keyscan();

// display(16);

}

}

voiddelay(uintz)

{

uintx,y;

for(x=z;x0;x--)

for(y=110;y0;y--);

}

voidkeyscan()

{

uchartemp,key;

P3=0xfe;

temp=P3;

temp=temp0xf0;

if(temp!=0xf0)

{

delay(10);

temp=P3;

temp=temp0xf0;

if(temp!=0xf0)

{

temp=P3;

switch(temp)

{

case0xee:

key=1;

break;

case0xde:

key=2;

break;

case0xbe:

key=3;

break;

case0x7e:

key=4;

break;

}

while(temp!=0xf0)

{

temp=P3;

temp=temp0xf0;

}

}

}

P3=0xfd;

temp=P3;

temp=temp0xf0;

if(temp!=0xf0)

{

delay(10);

temp=P3;

temp=temp0xf0;

if(temp!=0xf0)

{

temp=P3;

switch(temp)

{

case0xed:

key=5;

break;

case0xdd:

key=6;

break;

case0xbd:

key=7;

break;

case0x7d:

key=8;

break;

}

while(temp!=0xf0)

{

temp=P3;

temp=temp0xf0;

}

}

}

P3=0xfb;

temp=P3;

temp=temp0xf0;

if(temp!=0xf0)

{

delay(10);

temp=P3;

temp=temp0xf0;

if(temp!=0xf0)

{

temp=P3;

switch(temp)

{

case0xeb:

key=9;

break;

case0xdb:

key=10;

break;

case0xbb:

key=11;

break;

case0x7b:

key=12;

break;

}

while(temp!=0xf0)

{

temp=P3;

temp=temp0xf0;

}

}

}

P3=0xf7;

temp=P3;

temp=temp0xf0;

if(temp!=0xf0)

{

delay(10);

temp=P3;

temp=temp0xf0;

if(temp!=0xf0)

{

temp=P3;

switch(temp)

{

case0xe7:

key=13;

break;

case0xd7:

key=14;

break;

case0xb7:

key=15;

break;

case0x77:

key=16;

break;

}

while(temp!=0xf0)

{

temp=P3;

temp=temp0xf0;

}

}

}

display(key*key);

}

voiddisplay(uintz)

{

ucharaa,bb,cc;

aa=z/100;

bb=z%100/10;

cc=z%10;

P1=table1[aa];

P2=table2[2];

delay(1);

P2=0xff;

delay(1);

P1=table1[bb];

P2=table2[1];

delay(1);

P2=0xff;

delay(1);

P1=table1[cc];

P2=table2[0];

delay(1);

P2=0xff;

delay(1);

}