font [8]={0xfc,0xfe,0x11,0x11,0xfe,0xfc,0x00,0x00};

buffer[8];

buffer[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};

buffer[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};

buffer[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFC };

buffer[]={0x00,0x00,0x00,0x00,0x00,0x00,0xFC,0xFE };

buffer[]={0x00,0x00,0x00,0x00,0x00,0xFC,0xFE,0x11 };

buffer[]={0x00,0x00,0x00,0x00,0xFC,0xFE,0x11,0x11 };

buffer[]={0x00,0x00,0x00,0xFC,0xFE,0x11,0X11,0xFE };

buffer[]={0x00,0x00,0xFC,0xFE,0x11,0X11,0xFE,0xFC };

buffer[]={0x00,0xFC,0xFE,0x11,0X11,0xFE,0xFC,0x00 };

buffer[]={0xFC,0xFE,0x11,0X11,0xFE,0xFC,0x00,0x00 };

#define CLK  PORTA.B0
#define DS  PORTA.B1

unsigned char FONT[8]={0xFC,0xFE,0x11,0x11,0xFE,0xFC,0x00,0x00};
unsigned char buffer[8];

void clear_buffer()
{
unsigned char i;
for(i=0;i<8;i++) buffer[i]=0; //clear 8 bytes
}

void shift_buffer()//moves the data one place to the left to give the "movement" effect
{
unsigned char i;
for(i=0;i<8;i++)
{
buffer[i]=buffer[i+1];
}
}

void frame_scan()
{
unsigned char i;

DS=1; //put 1 on data pin
for(i=0;i<8;i++)//from byte 0 to byte 7 
{
 	CLK=1; CLK=0; DS=0;// clock pulse and clear data

PORTB=~ buffer[i]; // inverse and send buffer data byte to PORTB
 	delay_ms(1);
}
PORTB=0xFF; //ones to OFF all led common cathodes 8 rows 

}

void frame_scan()
{
unsigned char i ,n, speed=25;
//=======================
 for(n=0;n<= speed;n++) //Repeat 25 times to obtain steady display , speed of display
 {
 DS=1; //put 1 on data pin
       for(i=0;i<8;i++)//from byte 0 to byte 7
       {
 	CLK=1; CLK=0; DS=0;// clock pulse and clear data
        PORTB=~ buffer[i]; // inverse and send buffer data byte to PORTB
 	delay_ms(1);
       }
        PORTB=0xFF; //ones to OFF all led common cathodes 8 rows
  }
}

void buffer_update()
{
unsigned char index;
//update display frame for each FONT[index] byte ,so we have 8 frames

for(index=0;index<8;index++)
 {
shift_buffer();
buffer[7]= FONT[index];//put first character in last buffer location
frame_scan();
}

}//end of display frame buffer update

void main()
{
TRISA=0;
TRISB=0;

    while(1)
    {
 clear_buffer();
 buffer_update()
    
   }//while end 
}//main end

//======================
#define CLK  PORTA.B0
#define DS  PORTA.B1
//=====================
unsigned char FONT[8]={0xFC,0xFE,0x11,0x11,0xFE,0xFC,0x00,0x00};
unsigned char buffer[8];
//========================
void clear_buffer()
{
unsigned char i;
for(i=0;i<8;i++) buffer[i]=0; //clear 8 bytes
}
//=================================
void shift_buffer()//moves the data one place to the left to give the "movement" effect
{
unsigned char i;
for(i=0;i<8;i++)
{
buffer[i]=buffer[i+1];
}
}
//==========================
void frame_scan()
{
unsigned char i ,n, speed=25;
//=======================
 for(n=0;n<= speed;n++) //Repeat 25 times to obtain steady display , speed of display
 {
 DS=1; //put 1 on data pin
       for(i=0;i<8;i++)//from byte 0 to byte 7
       {
 	CLK=1; CLK=0; DS=0;// clock pulse and clear data
        PORTB=~ buffer[i]; // inverse and send buffer data byte to PORTB
 	delay_ms(1);
       }
        PORTB=0xFF; //ones to OFF all led common cathodes 8 rows
  }
}
//=====================
void buffer_update()
{
unsigned char index;
//update display frame for each FONT[index] byte ,so we have 8 frames

for(index=0;index<8;index++)
 {
shift_buffer();
buffer[7]= FONT[index];//put first character in last buffer location
frame_scan();
}

}//end of display frame buffer update
//=========================

void main()
{
TRISA=0;
TRISB=0;

    while(1)
    {
	clear_buffer();
	buffer_update();

   }//while end
}//main end