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        EEPW首頁(yè) > 嵌入式系統(tǒng) > 設(shè)計(jì)應(yīng)用 > C51單片機(jī)運(yùn)用定時(shí)器T0中斷實(shí)現(xiàn)電子時(shí)鐘

        C51單片機(jī)運(yùn)用定時(shí)器T0中斷實(shí)現(xiàn)電子時(shí)鐘

        作者: 時(shí)間:2016-12-02 來(lái)源:網(wǎng)絡(luò) 收藏


        上面是電路原理圖

        本文引用地址:http://www.biyoush.com/article/201612/324655.htm

        下面是程序源代碼:
        /*****************************************************************************
        功能描述:運(yùn)用定時(shí)器T0實(shí)現(xiàn)電子時(shí)鐘
        **************************************************************************/
        #include"reg52.h"
        #include"intrins.h"
        #define uint unsigned int
        #define uchar unsigned char

        sbit p32=P3^2;
        sbit p33=P3^3;

        uchar num;
        uint number,number0,number1;

        uchar code table[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40};

        void tiaoz();
        void delay()
        {
        uint b;
        for(b=300;b>0;b--);
        }

        void time() interrupt 1
        {
        TH0=(65536-45872)/256;
        TL0=(65536-45872)%256;
        num++;
        //tiaoz();
        }

        //以下屏蔽內(nèi)容為 利用兩個(gè)外部中斷來(lái)調(diào)整“時(shí),分”
        /*void tiaof() interrupt 0 //分針調(diào)整
        {
        if(p32==0)
        {
        delay();
        if(p32==0)
        {
        number=0;
        number0++;
        while(!p32);
        if(number0>=60)
        number0=0;
        }
        }
        }

        void tiaos() interrupt 2 //時(shí)針調(diào)整
        {
        if(p33==0)
        {
        delay();
        if(p33==0)
        {
        number=0;
        number1++;
        while(!p33);
        if(number1>=24)
        number1=0;

        }
        }
        }
        */

        //運(yùn)用獨(dú)立按鍵來(lái)調(diào)整“時(shí),分”
        void tiaoz0()
        {
        if(p32==0)
        {
        delay();
        if(p32==0)
        {
        number=0;
        number0++;
        while(!p32);
        if(number0>=60)
        number0=0;
        }
        }
        if(p33==0)
        {
        delay();
        if(p33==0)
        {
        number=0;
        number1++;
        while(!p33);
        if(number1>=24)
        number1=0;

        }
        }
        }


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