学习日志 姓名：成盛 班级：通卓161
| 今日学习任务 | 数码管和锁存器的应用 |
| 今日任务完成情况 | 键盘控制LED二进制显示 单独数码管的静态动态显示 数码管加锁存器的静态动态显示 |
| 今日开发中出现的问题汇总 | 无 |
| 今日未解决问题 | 无 |
| 今日开发收获 | 七段数码管的共阴表和共阳表 |
| 自我评价 | 无 |
| 其他 | 无 |
#include <reg51.h>
sbit wei = P2^1;
int key = 0, num1 = 0, num2 = 0;
//共阴数码管表
unsigned char code table[] = {0x3f, 0x06 , 0x5b , 0x4f , 0x66 ,
0x6d, 0x7d , 0x07 , 0x7f , 0x6f};
void delay()
{
int x = 50, i;
while (x--)
{
for (i = 0; i < 15; i++);
}
}
void KeyScan()
{
P1 = 0xf0; //判断哪一列被按下
if(P1 != 0xf0)
{
switch(P1)
{
case 0xe0: key = 0; break;
case 0xd0: key = 1; break;
case 0xb0: key = 2; break;
case 0x70: key = 3; break;
}
P1 = 0x0f;//判断哪一行被按下
switch(P1)
{
case 0x0e: key += 1; break;
case 0x0d: key += 5; break;
case 0x0b: key += 9; break;
case 0x07: key += 13; break;
}
while (P1 != 0x0f);
}
}
void display(int n)
{
if (n >= 0 && n <= 9)
{
P2 = 0xfe;
P0 = table[n];
}
else if (n >= 10 && n <= 99)
{
P2 = 0xfe;
P0 = table[n / 10];
delay();
P2 = ~(1 << 1);
P0 = table[n % 10];
delay();
}
else if (n >= 100 && n <= 999)
{
P2 = 0xfe;
P0 = table[n / 100];
delay();
P2 = ~(1 << 1);
P0 = table[(n % 100)/10];
delay();
P2 = ~(1 << 2);
P0 = table[n % 10];
delay();
}
else if (n >= 1000 && n <= 9999)
{
P2 = 0xfe;
P0 = table[n / 1000];
delay();
P2 = ~(1 << 1);
P0 = table[(n % 1000)/100];
delay();
P2 = ~(1 << 2);
P0 = table[(n % 100)/10];
delay();
P2 = ~(1 << 3);
P0 = table[n % 10];
delay();
}
else if (n >= 10000 && n <= 99999)
{
P2 = 0xfe;
P0 = table[n / 10000];
delay();
P2 = ~(1 << 1);
P0 = table[(n % 10000)/1000];
delay();
P2 = ~(1 << 2);
P0 = table[(n % 1000)/100];
delay();
P2 = ~(1 << 3);
P0 = table[(n % 100)/10];
delay();
P2 = ~(1 << 4);
P0 = table[n % 10];
delay();
}
}
int second()
{
int display_flag = 0;
while(display_flag != 5)
{
key = 0;
KeyScan(); //检测按键
switch(key)
{
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
num2 = num2 * 10 + key;
break;
case 10:
num2 = num2 * 10 + 0;
break;
case 15:
display_flag = 5;
break;
}
}
display(num2);
return num2;
}
void value()
{
while(1)
{
int i, display_flag = 0,sum;
key = 0;
KeyScan(); //检测按键
switch(key)
{
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
num1 = num1 * 10 + key;
break;
case 10:
num1 = num1 * 10 + 0;
break;
case 11: // +
display_flag = 1;
break;
case 12: // -
display_flag = 2;
break;
case 13: // *
display_flag = 3;
break;
case 14: // /
display_flag = 4;
break;
}
if(display_flag == 1)
{
num2 = second();
sum = num1 + num2;
display(sum);
}
else if(display_flag == 2)
{
num2 = second();
sum = num1 - num2;
display(sum);
}
else if(display_flag == 3)
{
num2 = second();
sum = num1 * num2;
display(sum);
}
else if(display_flag == 4)
{
num2 = second();
sum = num1 / num2;
display(sum);
}
}
}
int main()
{
value();
return 0;
}