写一个keil点阵显示at89c52的程序

下面是一个基本的 Keil 点阵显示程序，用于 AT89C52 微控制器：

#include <reg52.h> 

//定义点阵字体数组
unsigned char code font[16][16]={  
    {0x00,0x3c,0x42,0x99,0xa5,0xa5,0x99,0x42,0x3c,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//A
    {0x00,0xff,0x81,0x81,0x81,0x81,0x81,0x81,0xff,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//B
    {0x00,0x7e,0x81,0x81,0x81,0x81,0x81,0x81,0x7e,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//C
    {0x00,0xff,0x81,0x81,0x81,0x81,0x81,0x81,0x7e,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//D
    {0x00,0xff,0x81,0x81,0x81,0x81,0x81,0x81,0x81,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//E
    {0x00,0xff,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//F
    {0x00,0x7e,0x81,0x81,0x81,0x81,0x91,0x91,0x7e,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//G
    {0x00,0xff,0x08,0x08,0x08,0x08,0x08,0x08,0xff,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//H
    {0x00,0x81,0x81,0x81,0xff,0x81,0x81,0x81,0x81,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//I
    {0x00,0x7f,0x80,0x80,0x80,0x80,0x80,0x80,0xff,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//J
    {0x00,0xff,0x08,0x14,0x22,0x41,0x81,0x81,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//K
    {0x00,0xff,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//L
    {0x00,0xff,0x02,0x0c,0x30,0x30,0x0c,0x02,0xff,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//M
    {0x00,0xff,0x02,0x0c,0x10,0x20,0x40,0x80,0xff,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//N
    {0x00,0x7e,0x81,0x81,0x81,0x81,0x81,0x81,0x7e,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//O
    {0x00,0xff,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00}//P
};

//延时函数
void delay(unsigned int ms)
{
    unsigned int x, y;
    for(x = ms; x > 0; x--)
        for(y = 110; y > 0; y--);
}

void main()
{
    unsigned char i,j,k;
    while(1)
    {
        for(i=0;i<16;i++)
        {
            for(j=0;j<8;j++)
            {
                for(k=0;k<16;k++)
                {
                    P2=0x01<<j;
                    P0=~font[i][k];
                    delay(2);
                }
            }
        }
    }
}

这个程序使用了一个 `font` 数组，其中存储了 16 个字符的点阵数据。在主函数中，程序循环显示每个字符的点阵图案，并使用延时函数来控制点阵的刷新速度。请注意，这个程序只是基本的示例代码，您可能需要根据您的具体应用进行修改和优化。