89C52RC

1.定时器0，lcd1602显示时间。

 

 main.c

#include<regx52.h>
#include "Timer0.h"
#include "lcd1602.h"
#include "Delay.h"

unsigned char sec=55,min=40,hour=17;
void main()
{
//lcd1602锟酵讹拷时锟斤拷锟斤拷始锟斤拷
	LCD_Init();
	Timer0Init();

	LCD_ShowString(1,2,"Clock:");
	LCD_ShowString(2,1,"  :  :");
	while(1)
	{
		LCD_ShowNum(2,1,hour,2);
		LCD_ShowNum(2,4,min,2);	
		LCD_ShowNum(2,7,sec,2);			
	}
}
void Timer0_Router() interrupt 1
{
	static unsigned int T0Count=0;	
	TL0 = 0x66;		//锟斤拷锟矫讹拷时锟斤拷值
	TH0 = 0xFC;		//锟斤拷锟矫讹拷时锟斤拷值
	 if(++T0Count>=1000)	 //ms
	 {
	 	T0Count=0;
		if(++sec>=60)
		{
			sec=0;
			min++;
			if(++min>=60)
			{
				min=0;
				hour++;
				if(++hour>=24)
					hour=0;
			}
		}
	 }
	 
}