POV Fan Display Making

int timer = 900; //LED ON TIMING FOR ONE COLUM    
int HALL_SENS = 2; // HALL SENSOR INPUT PIN
int State = 0; // HALL SENSOR SENSED FLAG         
int lastState = 0; // HALL SENSOR SENSED FLAG LAST SCAN
long count; //TIME COUNTER FOR CHANGIING DISPLAY PRINTING
boolean space[]={0,0,0,0,0};   // SINGLE SPACE BAR
boolean A[]={1,1,1,1,1,0,0,1,0,1,1,1,1,1,1};//BIT MAP FOR A
boolean B[]={1,1,1,1,1,1,0,1,0,1,1,1,1,1,1};//BIT MAP FOR B
boolean C[]={1,1,1,1,1,1,0,0,0,1,1,0,0,0,1};//BIT MAP FOR C
boolean D[]={1,1,1,1,1,1,0,0,0,1,0,1,1,1,0};//BIT MAP FOR D
boolean E[]={1,1,1,1,1,1,0,1,0,1,1,0,1,0,1};//BIT MAP FOR E
boolean F[]={1,1,1,1,1,0,0,1,0,1,0,0,1,0,1};//BIT MAP FOR F
boolean G[]={1,1,1,1,1,1,0,0,0,1,1,0,1,0,1,1,1,1,0,1};//BIT MAP FOR G
boolean H[]={1,1,1,1,1,0,0,1,0,0,1,1,1,1,1};//BIT MAP FOR H
boolean I[]={1,0,0,0,1,1,1,1,1,1,1,0,0,0,1};//BIT MAP FOR I
boolean J[]={1,1,0,0,0,1,0,0,0,0,1,1,1,1,1};//BIT MAP FOR J
boolean K[]={1,1,1,1,1,0,0,1,0,0,0,1,0,1,0,1,0,0,0,1};//BIT MAP FOR K
boolean L[]={1,1,1,1,1,1,0,0,0,0,1,0,0,0,0};//BIT MAP FOR L
boolean M[]={1,1,1,1,1,0,0,0,1,0,0,1,1,0,0,0,0,0,1,0,1,1,1,1,1};//BIT MAP FOR M
boolean N[]={1,1,1,1,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,1,1,1,1};//BIT MAP FOR N
boolean O[]={1,1,1,1,1,1,0,0,0,1,1,1,1,1,1};//BIT MAP FOR O
boolean P[]={1,1,1,1,1,0,0,1,0,1,0,0,1,1,1};//BIT MAP FOR P
boolean Q[]={1,1,1,1,1,1,0,0,0,1,1,0,1,1,1,0,1,0,0,0,1,0,0,0,0};//BIT MAP FOR Q
boolean R[]={1,1,1,1,1,0,1,1,0,1,1,0,1,1,1};//BIT MAP FOR R
boolean S[]={1,0,1,1,1,1,0,1,0,1,1,1,1,0,1};//BIT MAP FOR S
boolean T[]={0,0,0,0,1,1,1,1,1,1,0,0,0,0,1};//BIT MAP FOR T
boolean U[]={1,1,1,1,1,1,0,0,0,0,1,1,1,1,1};//BIT MAP FOR U
boolean V[]={0,0,1,1,1,0,1,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,1,1,1};//BIT MAP FOR V
boolean W[]={1,1,1,1,1,0,1,0,0,0,0,0,1,1,0,0,1,0,0,0,1,1,1,1,1};//BIT MAP FOR W
boolean X[]={1,0,0,0,1,0,1,0,1,0,0,0,1,0,0,0,1,0,1,0,1,0,0,0,1};//BIT MAP FOR X
boolean Y[]={0,0,0,0,1,0,0,0,1,0,1,1,1,0,0,0,0,0,1,0,0,0,0,0,1};//BIT MAP FOR Y
boolean Z[]={1,1,0,0,1,1,0,1,0,1,1,0,0,1,1};//BIT MAP FOR Z
boolean exclamationmark[]={1,0,1,1,1,1,0,1,1,1};//BIT MAP FOR !
int m;//MARKER MEMORY FOR CHARECTER PRINTING LOOP
void setup() {// SETUP FOR INITIALISE SERIAL PORT AND DEFINE INPUT & OUTPUTS
  Serial.begin(115200);
  for (int Pin = 3; Pin <=7; Pin++) {
    pinMode(Pin, OUTPUT);
    digitalWrite(Pin,LOW);}
    pinMode(HALL_SENS, INPUT_PULLUP);}
void loop() {// MAIN LOOP 
State = digitalRead(HALL_SENS);
if (State != lastState){
  if (State == LOW) {
if(count >= 0 & count < 20001){//Ashish
                    WriteLetter3Width(A);
                    WriteLetter1Width(space);
                    WriteLetter3Width(S);
                    WriteLetter1Width(space);
                    WriteLetter3Width(H);
                    WriteLetter1Width(space);
                    WriteLetter3Width(I);
                    WriteLetter1Width(space);
                    WriteLetter3Width(S);
                    WriteLetter1Width(space);
                    WriteLetter3Width(H);
                    WriteLetter1Width(space);
                    WriteLetter3Width(I);
                    WriteLetter1Width(space);
                    WriteLetter3Width(S);
                    WriteLetter2Width(exclamationmark);
                    WriteLetter1Width(space);

                    }
if(count > 20001 & count < 40001 ){//Great
                    WriteLetter4Width(G);
                    WriteLetter1Width(space);
                    WriteLetter3Width(R);
                    WriteLetter1Width(space);
                    WriteLetter3Width(E);
                    WriteLetter1Width(space);
                    WriteLetter3Width(A);
                    WriteLetter1Width(space);
                    WriteLetter3Width(T);
                    WriteLetter1Width(space);
                    WriteLetter2Width(exclamationmark);
                    WriteLetter1Width(space);}}
lastState = State;}
count++;
if(count > 40001) {count = 0;}}
void WriteLetter5Width(boolean letter[]){// FUNCTION FOR 5 WIDTH CHARECTERS M,N,Q,V,W,X,Y
  m=0;
  for (int n=0; n<=4; n++){
  for (int Pin = 7; Pin >=3; Pin--) {
    digitalWrite(Pin, letter[m]);
    m=m+1;}
    delayMicroseconds(timer);}}
void WriteLetter4Width(boolean letter[]){// FUNCTION FOR 4 WIDTH CHARECTERS G,K
  m=0;
  for (int n=0; n<=3; n++){
  for (int Pin = 7; Pin >=3; Pin--) {
    digitalWrite(Pin, letter[m]);
    m=m+1;}
    delayMicroseconds(timer);}}
void WriteLetter3Width(boolean letter[]){// FUNCTION FOR 3 WIDTH CHARECTERS A,B,C,D,E,F,H,I,J,L,O,P,R,S,T,U,V,Z
  m=0;
  for (int n=0; n<=2; n++){
  for (int Pin = 7; Pin >=3; Pin--) {
    digitalWrite(Pin, letter[m]);
    m=m+1;}
    delayMicroseconds(timer);}}
void WriteLetter2Width(boolean letter[]){// FUNCTION FOR 2 WIDGH CHARECTERS !
  m=0;
  for (int n=0; n<=1; n++){
  for (int Pin = 7; Pin >=3; Pin--) {
    digitalWrite(Pin, letter[m]);
    m=m+1;}
    delayMicroseconds(timer);}}
void WriteLetter1Width(boolean letter[]){// FUNCTION FOR SINGLE WIDHT CHARECTERS "SPACE BAR"
  m=0;
   for (int Pin = 7; Pin >=3; Pin--) {
    digitalWrite(Pin, space[m]);
    m=m+1;}
    delayMicroseconds(timer);}