数字钟程序

#include <reg52.h> //调用头文件（单片机内部的寄存器定义）

#define uchar unsigned char
#define uint unsigned int
sbit lcdrs = P3^7;   
sbit lcdrw = P3^6;
sbit lcden = P3^4;
sbit s1=P1^0;
sbit s2=P1^1;
sbit s3=P1^2;
uchar count,shi,fen,miao,s1num;
uchar code table[]="   2011-09-22 4";
uchar code table1[]="    00:00:00";
void delay(uint z)                  // 延时
{
    uint x,y;
    for(x=z;x>0;x--)
        for(y=110;y>0;y--);
}
void write_com(uchar com)   //  写入指令数据到 lcd
{ 
    lcdrw=0;
    lcdrs=0;
    P2=com;
    delay(5);
    lcden=1;
    delay(5);
    lcden=0;
}

void write_data(uchar date)         //         写入字符显示数据到 lcd
{        
    lcdrw=0;
    lcdrs=1;
    P2=date;
    delay(5);
    lcden=1;
    delay(5);
    lcden=0;
}
void init1602()                //          初始化设定
{
    lcdrw=0;
    lcden=0;
    write_com(0x3C);
    write_com(0x0c);
    write_com(0x06);
    write_com(0x01);
    write_com(0x80);
}
/*void write_string(uchar *pp,uint n)
{
int i;
for(i=0;i<n;i++)
write_data(pp[i]);
}*/
void init()
{        uchar num;
        lcden=0;
        //shi=23;