Code_Cau1

#define _XTAL_FREQ 4000000

void main ( void )

{
    ANSEL = 0;
    ANSELH = 0;
    TRISD = 0x00;


    while(1)
    {
        //TAT_HET//
        PORTD = 0b00000000;
        __delay_ms(400);
        //SANG_HET//
        PORTD = 0b11111111;
        __delay_ms(400);
        //TAT_HET//
        PORTD = 0b00000000;
        __delay_ms(500);
        //D1-D4_SANG_DAN->D5-D8_TAT//
        PORTD = 0b00000001;
        __delay_ms(400);
        PORTD = 0b00000011;
        __delay_ms(400);
        PORTD = 0b00000111;
        __delay_ms(400);
        PORTD = 0b00001111;
        __delay_ms(400);
        //D1-D4_TAT->D5-D8_SANG_DUOI//
        PORTD = 0b10000000;
        __delay_ms(400);
        PORTD = 0b11000000;
        __delay_ms(400);
        PORTD = 0b11100000;
        __delay_ms(400);
        PORTD = 0b11110000;
        __delay_ms(400);
    }
}