Dot Matrix Display Interface with Arduino using MAX7219 Driver 2

#include <SPI.h>

#define CHIP_SELECT 7

byte PH[8] = {0xff, 0x09, 0x09, 0x06, 0xff, 0x18, 0x18, 0xff}; //PH
byte A [8] = {0x00, 0x06, 0x26, 0x40, 0x40, 0x26, 0x06, 0x00}; // :)
byte B [8] = {0x00, 0x06, 0x46, 0x40, 0x40, 0x46, 0x06, 0x00}; // :|
byte C [8] = {0x00, 0x06, 0x86, 0x40, 0x40, 0x86, 0x0E, 0x00}; // -1
byte D [8] = {0x00, 0x06, 0x86, 0x40, 0x40, 0x86, 0x16, 0x00}; //  0
byte E [8] = {0x00, 0x06, 0x86, 0x40, 0x40, 0x86, 0x26, 0x00}; // +1
byte F [8] = {0x00, 0x06, 0x86, 0x40, 0x40, 0x86, 0x46, 0x00}; // +2

void sendData(uint8_t address, uint8_t dat) {
  digitalWrite(CHIP_SELECT, LOW);
  SPI.transfer(address);
  SPI.transfer(dat);
  digitalWrite(CHIP_SELECT, HIGH);
}


void setup() {
  pinMode(CHIP_SELECT, OUTPUT);
  SPI.setBitOrder(MSBFIRST);
  SPI.begin();

  /*--------------------INIT--------------------*/
  sendData(0x0F, 0x01);  //Run test, All LED segments should light up
  delay(1000);
  sendData(0x0F, 0x00);  //End Test

  sendData(0x09, 0x00);  //Decode Mode
  sendData(0x0A, 0x00);  //Lowest Intensity
  sendData(0x0B, 0x0F);  //Scan all digits
  sendData(0x0C, 0x01);  //Turn on chip

  for (int i = 1; i < 9; i++) sendData(i, PH[i - 1]);
  delay(1500);
}

void loop() {
  for (int i = 1; i < 9; i++) {  sendData(i, A[i - 1]);  }
  delay(1000);
  for (int i = 1; i < 9; i++) {  sendData(i, B[i - 1]);  }
  delay(1000);
  for (int j = 0; j < 2; j++)
  {
    for (int i = 1; i < 9; i++) {  sendData(i, C[i - 1]);  }
    delay(1000);
    for (int i = 1; i < 9; i++) {  sendData(i, D[i - 1]);  }
    delay(1000);
    for (int i = 1; i < 9; i++) {  sendData(i, E[i - 1]);  }
    delay(1000);
    for (int i = 1; i < 9; i++) {  sendData(i, F[i - 1]);  }
    delay(1000);
  }
}