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效果图:

C51 代码

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//STC12C5A60S2  @12M晶振
#include <STC12C5A60S2.H>
#include <intrins.h>

sbit R1  = P0 ^ 0;
sbit G1  = P0 ^ 1;
sbit B1  = P0 ^ 2;
sbit R2  = P0 ^ 3;
sbit G2  = P0 ^ 4;
sbit B2  = P0 ^ 5;

sbit IA  = P2 ^ 7; //行控制线A
sbit IB  = P2 ^ 6; //行控制线B
sbit IC  = P2 ^ 5; //行控制线C
sbit ID  = P2 ^ 4; //行控制线D

sbit CK  = P2 ^ 2; //时钟
sbit LS  = P2 ^ 1; //锁存
sbit OE  = P2 ^ 0; //输出，低电平有效

#define  SCAN(X)  IA=(X)&1; IB=(X)&2; IC=(X)&4; ID=(X)&8;

unsigned short ms   = 0;
unsigned short sec  = 0;

void Delay100us()       //@12.000MHz
{
    unsigned char i, j;

    _nop_();
    _nop_();
    i = 2;
    j = 38;
    do
    {
        while (--j);
    } while (--i);
}

void  SendRGB(int s)
{
    unsigned int i;
    unsigned int j;
    unsigned int color;

    //手上的屏 译码器是 ICN74HC138 为 LED 显示屏行选专用译码电路，不能应用于静态译码电路，
    //译码器的输入 A0 必须为动态信号，并且在 50ms 内必须有 0→1 的状态出现，
    //否则内部译码电路处于关闭状态，并关闭所有输出 Pin.
    for(i = 0; i < 16; i++)                   //扫描行数
    {
        SCAN(i); //选择行

        // 写入缓存
        color = s % 7 + 1;
        for(j = 0; j <= s % 64; j++) // [0 ~ 63] 右闭区间等于64
        {
            R1 = color & 1;
            G1 = color & 2;
            B1 = color & 4;

            R2 = G1;
            G2 = B1;
            B2 = R1;

            CK=1;
            CK=0;
        }

        // 清除缓存
        for(; j < 64; j++) // [0 ~ 64) 右开区间等于64
        {
            R1=G1=B1=R2=G2=B2=0;
            CK=1;
            CK=0;
        }

        //锁存
        LS=1;
        LS=0;

        //显示开
        OE=0;
        Delay100us();
        OE=1;
    }
}

void Timer0Init(void)       //1毫秒@12.000MHz
{
    AUXR |= 0x80;       //定时器时钟1T模式
    TMOD &= 0xF0;       //设置定时器模式
    TL0   = 0x20;       //设置定时初始值
    TH0   = 0xD1;       //设置定时初始值
    TF0   = 0;          //清除TF0标志
    TR0   = 1;          //定时器0开始计时

    ET0   = 1;          //定时器0中断允许
    EA    = 1;          //开启全局中断
}

int main()
{
    Timer0Init();

    while(1)
    {
            SendRGB(sec);
    }
}
void timer0 (void) interrupt 1
{
    ms++;
    if(ms >=1000)
    {
        sec++;
        ms = 0;
    }
}