感觉和之前自己写的那个差不太多，只是用了定时器。贴一下代码.

main.c

#include <REGX52.H>
#include "LCD1602.h"
#include "Delay.h"
#include "Timer0.h"
unsigned char Sec=59,Min=49,Hour=17;void main()
{LCD_Init();Timer0Init();LCD_ShowString(1,1,"Clock");LCD_ShowString(2,3,":");LCD_ShowString(2,6,":");while(1){LCD_ShowNum(2,1,Hour,2);LCD_ShowNum(2,4,Min,2);LCD_ShowNum(2,7,Sec,2);}}
void Timer0_Routine() interrupt 1
{static unsigned int T0Count;TL0 = 0x18;		//设置定时初值TH0 = 0xFC;		//设置定时初值T0Count++;if(T0Count>=1000){T0Count=0;Sec++;if(Sec>=60){Sec=0;Min++;if(Min>=60){Min=0;Hour++;if(Hour>=24){Hour=0;}}}}
}

timer0.c

#include <REGX52.H>/*** @brief  定时器0初始化，1毫秒@12.000MHz* @param  无* @retval 无*/
void Timer0Init(void)
{TMOD &= 0xF0;		//设置定时器模式TMOD |= 0x01;		//设置定时器模式TL0 = 0x18;		//设置定时初值TH0 = 0xFC;		//设置定时初值TF0 = 0;		//清除TF0标志TR0 = 1;		//定时器0开始计时ET0=1;EA=1;PT0=0;
}/*定时器中断函数模板
void Timer0_Routine() interrupt 1
{static unsigned int T0Count;TL0 = 0x18;		//设置定时初值TH0 = 0xFC;		//设置定时初值T0Count++;if(T0Count>=1000){T0Count=0;}
}
*/

 timer0.h

#ifndef __TIMER0_H__
#define __TIMER0_H__void Timer0Init(void);#endif