只学了矩阵键盘，没有学LCD所以请大佬们帮忙看看怎么解决这个东西另外由于仿真图的矩阵键盘好像用不了 就不放了，板子是ct107d的，熬夜好几个晚上了，救救孩子吧
单片机源程序如下:
#include <reg52.h>
#define uint unsigned int
#define uchar unsigned char
sfr P4 = 0xC0;
//行线
sbit R1 = P3^0;
sbit R2 = P3^1;
sbit R3 = P3^2;
sbit R4 = P3^3;
//列线
sbit C1 = P4^4;
sbit C2 = P4^2;
sbit C3 = P3^5;
sbit C4 = P3^4;
uint Num,temp;
uchar fuhao,keyvalue,bai,shi,ge,flag,sign,a,b;
uchar i = 0;
uchar x1, x2, x3, x4, x5, x6, x7, x8;
uchar code tab[]={
0xc0,0xf9,0xa4,0xb0,
0x99,0x92,0x82,0xf8,
0x80,0x90,0xff,
0x89,0x8e,0xc7,0xc0 };//段码表
//延时函数
void delay(uint z)
{
uint x, y;
for (x = z; x > 0; x--)
for (y = 112; y > 0; y--);
}
//扫描键盘函数
uchar Key_Scan()
{
R1 = 0; //第一行线清零0，其余行列置1
R2 = R3 = R4 = 1;
C1 = C2 = C3 = C4 = 1;
if(C1 == 0)
{
while(!C1);
Num = 0;
}
else if(C2 == 0)
{
while(!C2);
Num = 1;
}
else if(C3 == 0)
{
while(!C3);
Num = 2;
}
else if(C4 == 0)
{
while(!C4);
fuhao = '+';
}
R2 = 0; //第二行线清零0，其余行列置1
R1 = R3 = R4 = 1;
C1 = C2 = C3 = C4 = 1;
if(C1 == 0)
{
while(!C1);
Num = 3;
}
else if(C2 == 0)
{
while(!C2);
Num = 4;
}
else if(C3 == 0)
{
while(!C3);
Num = 5;
}
else if(C4 == 0)
{
while(!C4);
fuhao = '-';
}
R3 = 0; //第三行线清零0，其余行列置1
R1 = R2 = R4 = 1;
C1 = C2 = C3 = C4 = 1;
if(C1 == 0)
{
while(!C1);
Num = 6;
}
else if(C2 == 0)
{
while(!C2);
Num = 7;
}
else if(C3 == 0)
{
while(!C3);
Num = 8;
}
else if(C4 == 0)
{
while(!C4);
fuhao = '*';
}
R4 = 0; //第四行线清零0，其余行列置1
R1 = R2 = R3 = 1;
C1 = C2 = C3 = C4 = 1;
if(C1 == 0)
{
while(!C1);
Num = 9;
}
else if(C2 == 0)
{
while(!C2);
fuhao = 'r';
}
else if(C3 == 0)
{
while(!C3);
fuhao = '=';
}
else if(C4 == 0)
{
while(!C4);
fuhao = '/';
}
return Num;
}
//计算键值函数
void calculate()
{
if (keyvalue == '+' || keyvalue == '-' || keyvalue == '*' || keyvalue == '/' || keyvalue == 'r' || keyvalue == '=')
{
if (flag == 0)//如果输入的是第一个数据
{
a = temp;//将temp的值赋给变量a
flag = 1;
}
else
{
b = temp;//将temp的值赋给变量b
}
temp = 0;
if (keyvalue != '=')
{
sign = keyvalue;
}
else
{
flag = 0;
switch (sign)
{
case '+':a = a + b;
break;
case '-':a = a - b;
break;
case '*':a = a * b;
break;
case '/':a = a / b;
break;
case 'r':a = 0;
default:break;
}
temp = a;//将a的值赋给变量temp
}
sign = 0;//将所有数据清零
a = b = 0;
temp = 0;
}
else if (
keyvalue == 0 || keyvalue == 1 || keyvalue == 2 ||
keyvalue == 3 || keyvalue == 4 || keyvalue == 5 ||
keyvalue == 6 || keyvalue == 7 || keyvalue == 8 ||
keyvalue == 9)
{
if (flag == 0)
{
temp = keyvalue;
flag = 1;
}
else
{
temp = temp * 10 + keyvalue;
}
}
}
//显示函数
void display(uchar aa, uchar bb, uchar cc, uchar dd, uchar ee, uchar ff, uchar gg, uchar hh)
{
P2 = 0x0; P0 = 0x0;
P2 = ((P2 & 0x1f) | 0xc0); P0 = 0x01;
P2 = 0x0; P0 = 0xff;
P2 = ((P2 & 0x1f) | 0xe0); P0 = tab[aa];
delay(5);
P2 = 0x0; P0 = 0x0;
P2 = ((P2 & 0x1f) | 0xc0); P0 = 0x02;
P2 = 0x0; P0 = 0xff;
P2 = ((P2 & 0x1f) | 0xe0); P0 = tab[bb];
delay(5);
P2 = 0x0; P0 = 0x0;
P2 = ((P2 & 0x1f) | 0xc0); P0 = 0x04;
P2 = 0x0; P0 = 0xff;
P2 = ((P2 & 0x1f) | 0xe0); P0 = tab[cc];
delay(5);
P2 = 0x0; P0 = 0x0;
P2 = ((P2 & 0x1f) | 0xc0); P0 = 0x08;
P2 = 0x0; P0 = 0xff;
P2 = ((P2 & 0x1f) | 0xe0); P0 = tab[dd];
delay(5);
P2 = 0x0; P0 = 0x0;
P2 = ((P2 & 0x1f) | 0xc0); P0 = 0x10;
P2 = 0x0; P0 = 0xff;
P2 = ((P2 & 0x1f) | 0xe0); P0 = tab[ee];
delay(5);
P2 = 0x0; P0 = 0x0;
P2 = ((P2 & 0x1f) | 0xc0); P0 = 0x20;
P2 = 0x0; P0 = 0xff;
P2 = ((P2 & 0x1f) | 0xe0); P0 = tab[ff];
delay(5);
P2 = 0x0; P0 = 0x0;
P2 = ((P2 & 0x1f) | 0xc0); P0 = 0x40;
P2 = 0x0; P0 = 0xff;
P2 = ((P2 & 0x1f) | 0xe0); P0 = tab[gg];
delay(5);
P2 = 0x0; P0 = 0x0;
P2 = ((P2 & 0x1f) | 0xc0); P0 = 0x80;
P2 = 0x0; P0 = 0xff;
P2 = ((P2 & 0x1f) | 0xe0); P0 = tab[hh];
delay(5);
}
//计算每一位的值
void computer(uchar x)
{
x8 = x / 10000000;
x7 = (x - x8 * 10000000) / 1000000;
x6 = (x - x7 * 1000000) / 100000;
x5 = (x - x6 * 100000) / 10000;
x4 = (x - x5 * 10000) / 1000;
x3 = (x - x4 * 1000) / 100;
x2 = (x - x3 * 100) / 10;
x1 = x - x2 * 10;
display(x8, x7, x6 , x5 , x4 , x3 , x2 , x1);
}
void main()
{
P2 = ((P2&0x1f)|0xa0);
P0 = 0X00;
P2 = ((P2&0x1f)|0x80);
P0 = 0xff;
while(1)
{
keyvalue = Key_Scan();
calculate();
computer(temp);
delay(10);
}
}
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