51单片机电子时钟六位显示

您需要一个51单片机的电子时钟程序，同时需要一个六位数码管显示模块。以下是一个简单的代码示例，实现了小时、分钟和秒的计时和显示。您可以根据自己的需要进行修改和扩展。

#include <reg52.h>

// 数码管位选控制端口
sbit DIG1 = P2^0;
sbit DIG2 = P2^1;
sbit DIG3 = P2^2;
sbit DIG4 = P2^3;
sbit DIG5 = P2^4;
sbit DIG6 = P2^5;

// 数码管段选控制端口
sbit SEG_A = P0^0;
sbit SEG_B = P0^1;
sbit SEG_C = P0^2;
sbit SEG_D = P0^3;
sbit SEG_E = P0^4;
sbit SEG_F = P0^5;
sbit SEG_G = P0^6;
sbit SEG_DP = P0^7;

// 定时器中断计数器
unsigned char count = 0;

// 时、分、秒变量
unsigned char hour = 0;
unsigned char minute = 0;
unsigned char second = 0;

// 数码管显示缓存数组
unsigned char display[6];

void main()
{
    // 定时器1初始化，中断频率为1kHz
    TMOD = 0x10;
    TH1 = 0xFC;
    TL1 = 0x66;
    EA = 1;
    ET1 = 1;
    TR1 = 1;

    // 数码管显示初始化
    DIG1 = 0;
    DIG2 = 0;
    DIG3 = 0;
    DIG4 = 0;
    DIG5 = 0;
    DIG6 = 0;
    SEG_A = 1;
    SEG_B = 1;
    SEG_C = 1;
    SEG_D = 1;
    SEG_E = 1;
    SEG_F = 1;
    SEG_G = 1;
    SEG_DP = 0;

    while (1)
    {
        // 刷新数码管显示
        DIG1 = 1;
        P1 = display[0];
        DIG1 = 0;

        DIG2 = 1;
        P1 = display[1];
        DIG2 = 0;

        DIG3 = 1;
        P1 = display[2];
        DIG3 = 0;

        DIG4 = 1;
        P1 = display[3];
        DIG4 = 0;

        DIG5 = 1;
        P1 = display[4];
        DIG5 = 0;

        DIG6 = 1;
        P1 = display[5];
        DIG6 = 0;
    }
}

void timer1_isr() interrupt 3
{
    // 定时器中断计数器加1
    count++;

    // 每1000个中断计数器，秒数加1
    if (count == 1000)
    {
        count = 0;
        second++;

        // 如果秒数达到60，分钟加1，秒数归零
        if (second == 60)
        {
            second = 0;
            minute++;

            // 如果分钟达到60，小时加1，分钟归零
            if (minute == 60)
            {
                minute = 0;
                hour++;

                // 如果小时达到24，小时归零，重新开始计时
                if (hour == 24)
                {
                    hour = 0;
                }
            }
        }
    }

    // 更新数码管显示缓存数组
    display[0] = hour / 10;
    display[1] = hour % 10;
    display[2] = minute / 10;
    display[3] = minute % 10;
    display[4] = second / 10;
    display[5] = second % 10;

    // 数码管动态扫描
    static unsigned char i = 0;
    SEG_DP = 0;
    SEG_A = display[i] & 0x01;
    SEG_B = display[i] & 0x02;
    SEG_C = display[i] & 0x04;
    SEG_D = display[i] & 0x08;
    SEG_E = display[i] & 0x10;
    SEG_F = display[i] & 0x20;
    SEG_G = display[i] & 0x40;
    DIG1 = 1;
    DIG2 = 1;
    DIG3 = 1;
    DIG4 = 1;
    DIG5 = 1;
    DIG6 = 1;
    switch (i)
    {
        case 0: DIG1 = 0; break;
        case 1: DIG2 = 0; break;
        case 2: DIG3 = 0; break;
        case 3: DIG4 = 0; break;
        case 4: DIG5 = 0; break;
        case 5: DIG6 = 0; break;
    }
    i++;
    if (i >= 6)
    {
        i = 0;
    }
}

请注意，此代码示例仅为参考。实际应用中，您需要考虑更多的因素，例如电源管理、时钟精度、按键控制等等。