编写一个c程序实现在八位数码管上显示HELLOC51并循环右移

以下是使用51单片机编写的C语言程序，可以在八位数码管上显示HELLOC51并循环右移：

#include <reg51.h>

unsigned char code table[] = {0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f};

void delay(unsigned int t)
{
    unsigned int i, j;
    for(i=0; i<t; i++)
        for(j=0; j<125; j++);
}

void main()
{
    unsigned char i = 0;
    while(1)
    {
        P0 = 0x00;
        P2 = table['H'-'A'];
        delay(100);
        
        P0 = 0x01;
        P2 = table['E'-'A'];
        delay(100);
        
        P0 = 0x02;
        P2 = table['L'-'A'];
        delay(100);
        
        P0 = 0x03;
        P2 = table['L'-'A'];
        delay(100);
        
        P0 = 0x04;
        P2 = table['O'-'A'];
        delay(100);
        
        P0 = 0x05;
        P2 = table['C'-'A'];
        delay(100);
        
        P0 = 0x06;
        P2 = table['5'-48];
        delay(100);
        
        P0 = 0x07;
        P2 = table['1'-48];
        delay(100);
        
        for(i=0; i<7; i++)
        {
            P0 = 0x00;
            P2 = table['C'-'A'];
            delay(100);
            
            P0 = 0x01;
            P2 = table['5'-48];
            delay(100);
            
            P0 = 0x02;
            P2 = table['1'-48];
            delay(100);
            
            P0 = 0x03;
            P2 = table['H'-'A'];
            delay(100);
            
            P0 = 0x04;
            P2 = table['E'-'A'];
            delay(100);
            
            P0 = 0x05;
            P2 = table['L'-'A'];
            delay(100);
            
            P0 = 0x06;
            P2 = table['L'-'A'];
            delay(100);
            
            P0 = 0x07;
            P2 = table['O'-'A'];
            delay(100);
        }
    }
}

程序首先定义了一个数字表格，用于将字母和数字转换为相应的数码管显示。然后定义了一个延迟函数，用于控制数码管的刷新速度。

在主函数中，先显示HELLOC51，然后进入循环，不断将显示内容向右移动，直到再次显示HELLOC51。