时钟一：51单片机用替换的方法在数码管上显示时钟

主文件clock.c：

#include <reg52.h>
#include "./delay/delay.h"


#define PORTLEN P0


sbit bit_select = P2^0;
sbit seg_select = P2^1;


unsigned char src[8] = {0x3f,0x3f,0x40,0x3f,0x3f,0x40,0x3f,0x3f};
unsigned char qrc[8] = {0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char second1[10] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};


void main()
{

    unsigned char i;
    unsigned char j = 0;

    unsigned char k = 0;

    unsigned char l = 0;
    unsigned char m = 0;
    unsigned char n = 0;
    unsigned char q = 0;
    unsigned char num = 0;
    unsigned char count = 0;


    while(1)
    {