This character library provides a list of characters that are useful for integrating with projects that utilise OLED displays.

/*                             Characters (library)                           */
/*                            Filename: Characters.h                          */
/*                                Author: Michael                             */

const char Character_Lookup[91][9] =                                                               
{

  {' ', 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000},  // Row 0
  {'!', 0b00000000, 0b00000000, 0b00000110, 0b01011111, 0b01011111, 0b00000110, 0b00000000, 0b00000000},    
  {'"', 0b00000000, 0b00000011, 0b00000011, 0b00000000, 0b00000011, 0b00000011, 0b00000000, 0b00000000},
  {'#', 0b00010100, 0b01111111, 0b01111111, 0b00010100, 0b01111111, 0b01111111, 0b00010100, 0b00000000},
  {'$', 0b00100100, 0b00101110, 0b01101011, 0b01101011, 0b00111010, 0b00010010, 0b00000000, 0b00000000},
  {'%', 0b01000110, 0b01100110, 0b00110000, 0b00011000, 0b00001100, 0b01100110, 0b01100010, 0b00000000},
  {'&', 0b00110000, 0b01111010, 0b01001111, 0b01011101, 0b00110111, 0b01111010, 0b01001000, 0b00000000},
  {'{', 0b00000000, 0b00011100, 0b00111110, 0b01100011, 0b01000001, 0b00000000, 0b00000000, 0b00000000},
  {'}', 0b00000000, 0b01000001, 0b01100011, 0b00111110, 0b00011100, 0b00000000, 0b00000000, 0b00000000},
  {'*', 0b00001000, 0b00101010, 0b00111110, 0b00011100, 0b00011100, 0b00111110, 0b00101010, 0b00001000},
  {'+', 0b00001000, 0b00001000, 0b00111110, 0b00111110, 0b00001000, 0b00001000, 0b00000000, 0b00000000},
  {',', 0b00000000, 0b10000000, 0b11100000, 0b01100000, 0b00000000, 0b00000000, 0b00000000, 0b00000000},
  {'-', 0b00001000, 0b00001000, 0b00001000, 0b00001000, 0b00001000, 0b00001000, 0b00000000, 0b00000000},
  {'.', 0b00000000, 0b00000000, 0b01100000, 0b01100000, 0b00000000, 0b00000000, 0b00000000, 0b00000000},
  {'/', 0b01100000, 0b00110000, 0b00011000, 0b00001100, 0b00000110, 0b00000011, 0b00000001, 0b00000000},
  {'0', 0b00111110, 0b01111111, 0b01110001, 0b01011001, 0b01001101, 0b01111111, 0b00111110, 0b00000000},
  {'1', 0b01000000, 0b01000010, 0b01111111, 0b01111111, 0b01000000, 0b01000000, 0b00000000, 0b00000000},
  {'2', 0b01100010, 0b01110011, 0b01011001, 0b01001001, 0b01101111, 0b01100110, 0b00000000, 0b00000000},
  {'3', 0b00100010, 0b01100011, 0b01001001, 0b01001001, 0b01111111, 0b00110110, 0b00000000, 0b00000000},
  {'4', 0b00011000, 0b00011100, 0b00010110, 0b01010011, 0b01111111, 0b01111111, 0b01010000, 0b00000000},
  {'5', 0b00100111, 0b01100111, 0b01000101, 0b01000101, 0b01111101, 0b00111001, 0b00000000, 0b00000000},
  {'6', 0b00111100, 0b01111110, 0b01001011, 0b01001001, 0b01111001, 0b00110000, 0b00000000, 0b00000000},
  {'7', 0b00000011, 0b00000011, 0b01110001, 0b01111001, 0b00001111, 0b00000111, 0b00000000, 0b00000000},
  {'8', 0b00110110, 0b01111111, 0b01001001, 0b01001001, 0b01111111, 0b00110110, 0b00000000, 0b00000000},
  {'9', 0b00000110, 0b01001111, 0b01001001, 0b01101001, 0b00111111, 0b00011110, 0b00000000, 0b00000000},
  {':', 0b00000000, 0b00000000, 0b01100110, 0b01100110, 0b00000000, 0b00000000, 0b00000000, 0b00000000},
  {';', 0b00000000, 0b10000000, 0b11100110, 0b01100110, 0b00000000, 0b00000000, 0b00000000, 0b00000000},
  {'<', 0b00001000, 0b00011100, 0b00110110, 0b01100011, 0b01000001, 0b00000000, 0b00000000, 0b00000000},
  {'=', 0b00100100, 0b00100100, 0b00100100, 0b00100100, 0b00100100, 0b00100100, 0b00000000, 0b00000000},
  {'>', 0b00000000, 0b01000001, 0b01100011, 0b00110110, 0b00011100, 0b00001000, 0b00000000, 0b00000000},
  {'?', 0b00000010, 0b00000011, 0b01010001, 0b01011001, 0b00001111, 0b00000110, 0b00000000, 0b00000000},
  {'@', 0b00111110, 0b01111111, 0b01000001, 0b01011101, 0b01011101, 0b00011111, 0b00011110, 0b00000000},

  {'A', 0b01111100, 0b01111110, 0b00010011, 0b00010011, 0b01111110, 0b01111100, 0b00000000, 0b00000000},
  {'B', 0b01000001, 0b01111111, 0b01111111, 0b01001001, 0b01001001, 0b01111111, 0b00110110, 0b00000000},
  {'C', 0b00011100, 0b00111110, 0b01100011, 0b01000001, 0b01000001, 0b01100011, 0b00100010, 0b00000000},
  {'D', 0b01000001, 0b01111111, 0b01111111, 0b01000001, 0b01100011, 0b00111110, 0b00011100, 0b00000000},
  {'E', 0b01000001, 0b01111111, 0b01111111, 0b01001001, 0b01011101, 0b01000001, 0b01100011, 0b00000000},
  {'F', 0b01000001, 0b01111111, 0b01111111, 0b01001001, 0b00011101, 0b00000001, 0b00000011, 0b00000000},
  {'G', 0b00011100, 0b00111110, 0b01100011, 0b01000001, 0b01010001, 0b01110011, 0b01110010, 0b00000000},
  {'H', 0b01111111, 0b01111111, 0b00001000, 0b00001000, 0b01111111, 0b01111111, 0b00000000, 0b00000000},
  {'I', 0b00000000, 0b01000001, 0b01111111, 0b01111111, 0b01000001, 0b00000000, 0b00000000, 0b00000000},
  {'J', 0b00110000, 0b01110000, 0b01000000, 0b01000001, 0b01111111, 0b00111111, 0b00000001, 0b00000000},
  {'K', 0b01000001, 0b01111111, 0b01111111, 0b00001000, 0b00011100, 0b01110111, 0b01100011, 0b00000000},
  {'L', 0b01000001, 0b01111111, 0b01111111, 0b01000001, 0b01000000, 0b01100000, 0b01110000, 0b00000000},
  {'M', 0b01111111, 0b01111111, 0b00001110, 0b00011100, 0b00001110, 0b01111111, 0b01111111, 0b00000000},
  {'N', 0b01111111, 0b01111111, 0b00000110, 0b00001100, 0b00011000, 0b01111111, 0b01111111, 0b00000000},
  {'O', 0b00011100, 0b00111110, 0b01100011, 0b01000001, 0b01100011, 0b00111110, 0b00011100, 0b00000000},
  {'P', 0b01000001, 0b01111111, 0b01111111, 0b01001001, 0b00001001, 0b00001111, 0b00000110, 0b00000000},
  {'Q', 0b00011110, 0b00111111, 0b00100001, 0b01110001, 0b01111111, 0b01011110, 0b00000000, 0b00000000},
  {'R', 0b01000001, 0b01111111, 0b01111111, 0b00001001, 0b00011001, 0b01111111, 0b01100110, 0b00000000},
  {'S', 0b00100110, 0b01101111, 0b01001101, 0b01011001, 0b01110011, 0b00110010, 0b00000000, 0b00000000},
  {'T', 0b00000011, 0b01000001, 0b01111111, 0b01111111, 0b01000001, 0b00000011, 0b00000000, 0b00000000},
  {'U', 0b01111111, 0b01111111, 0b01000000, 0b01000000, 0b01111111, 0b01111111, 0b00000000, 0b00000000},
  {'V', 0b00011111, 0b00111111, 0b01100000, 0b01100000, 0b00111111, 0b00011111, 0b00000000, 0b00000000},
  {'W', 0b01111111, 0b01111111, 0b00110000, 0b00011000, 0b00110000, 0b01111111, 0b01111111, 0b00000000},
  {'X', 0b01000011, 0b01100111, 0b00111100, 0b00011000, 0b00111100, 0b01100111, 0b01000011, 0b00000000},
  {'Y', 0b00000111, 0b01001111, 0b01111000, 0b01111000, 0b01001111, 0b00000111, 0b00000000, 0b00000000},
  {'Z', 0b01000111, 0b01100011, 0b01110001, 0b01011001, 0b01001101, 0b01100111, 0b01110011, 0b00000000},

  {'[', 0b00000000, 0b01111111, 0b01111111, 0b01000001, 0b01000001, 0b00000000, 0b00000000, 0b00000000},
  {']', 0b00000000, 0b01000001, 0b01000001, 0b01111111, 0b01111111, 0b00000000, 0b00000000, 0b00000000},
  {'^', 0b00001000, 0b00001100, 0b00000110, 0b00000011, 0b00000110, 0b00001100, 0b00001000, 0b00000000},
  {'_', 0b10000000, 0b10000000, 0b10000000, 0b10000000, 0b10000000, 0b10000000, 0b10000000, 0b00000000},
  {'a', 0b00100000, 0b01110100, 0b01010100, 0b01010100, 0b00111100, 0b01111000, 0b01000000, 0b00000000},
  {'b', 0b01000001, 0b01111111, 0b00111111, 0b01001000, 0b01001000, 0b01111000, 0b00110000, 0b00000000},
  {'c', 0b00111000, 0b01111100, 0b01000100, 0b01000100, 0b01101100, 0b00101000, 0b00000000, 0b00000000},
  {'d', 0b00110000, 0b01111000, 0b01001000, 0b01001001, 0b00111111, 0b01111111, 0b01000000, 0b00000000},
  {'e', 0b00111000, 0b01111100, 0b01010100, 0b01010100, 0b01011100, 0b00011000, 0b00000000, 0b00000000},
  {'f', 0b01001000, 0b01111110, 0b01111111, 0b01001001, 0b00000011, 0b00000010, 0b00000000, 0b00000000},
  {'g', 0b10011000, 0b10111100, 0b10100100, 0b10100100, 0b11111000, 0b01111100, 0b00000100, 0b00000000},
  {'h', 0b01000001, 0b01111111, 0b01111111, 0b00001000, 0b00000100, 0b01111100, 0b01111000, 0b00000000},
  {'i', 0b00000000, 0b01000100, 0b01111101, 0b01111101, 0b01000000, 0b00000000, 0b00000000, 0b00000000},
  {'j', 0b01100000, 0b11100000, 0b10000000, 0b10000000, 0b11111101, 0b01111101, 0b00000000, 0b00000000},
  {'k', 0b01000001, 0b01111111, 0b01111111, 0b00010000, 0b00111000, 0b01101100, 0b01000100, 0b00000000},
  {'l', 0b00000000, 0b01000001, 0b01111111, 0b01111111, 0b01000000, 0b00000000, 0b00000000, 0b00000000},
  {'m', 0b01111100, 0b01111100, 0b00011000, 0b00111000, 0b00011100, 0b01111100, 0b01111000, 0b00000000},
  {'n', 0b01111100, 0b01111100, 0b00000100, 0b00000100, 0b01111100, 0b01111000, 0b00000000, 0b00000000},
  {'o', 0b00111000, 0b01111100, 0b01000100, 0b01000100, 0b01111100, 0b00111000, 0b00000000, 0b00000000},
  {'p', 0b10000100, 0b11111100, 0b11111000, 0b10100100, 0b00100100, 0b00111100, 0b00011000, 0b00000000},
  {'q', 0b00011000, 0b00111100, 0b00100100, 0b10100100, 0b11111000, 0b11111100, 0b10000100, 0b00000000},
  {'r', 0b01000100, 0b01111100, 0b01111000, 0b01001100, 0b00000100, 0b00011100, 0b00011000, 0b00000000},
  {'s', 0b01001000, 0b01011100, 0b01010100, 0b01010100, 0b01110100, 0b00100100, 0b00000000, 0b00000000},
  {'t', 0b00000000, 0b00000100, 0b00111110, 0b01111111, 0b01000100, 0b00100100, 0b00000000, 0b00000000},
  {'u', 0b00111100, 0b01111100, 0b01000000, 0b01000000, 0b00111100, 0b01111100, 0b01000000, 0b00000000},
  {'v', 0b00011100, 0b00111100, 0b01100000, 0b01100000, 0b00111100, 0b00011100, 0b00000000, 0b00000000},
  {'w', 0b00111100, 0b01111100, 0b01110000, 0b00111000, 0b01110000, 0b01111100, 0b00111100, 0b00000000},
  {'x', 0b01000100, 0b01101100, 0b00111000, 0b00010000, 0b00111000, 0b01101100, 0b01000100, 0b00000000},
  {'y', 0b10011100, 0b10111100, 0b10100000, 0b10100000, 0b11111100, 0b01111100, 0b00000000, 0b00000000},
  {'z', 0b01001100, 0b01100100, 0b01110100, 0b01011100, 0b01001100, 0b01100100, 0b00000000, 0b00000000},
  {'{', 0b00001000, 0b00001000, 0b00111110, 0b01110111, 0b01000001, 0b01000001, 0b00000000, 0b00000000},
  {'}', 0b01000001, 0b01000001, 0b01110111, 0b00111110, 0b00001000, 0b00001000, 0b00000000, 0b00000000},    
  {'~', 0b00000010, 0b00000011, 0b00000001, 0b00000011, 0b00000010, 0b00000011, 0b00000001, 0b00000000},  // Row 90

};

Table 1 represents the pixel arrangement of the character ‘2’, as per the library.

CharacterPixel Array
‘2’01111000
11001100
00001100
00111000
01100000
11001100
11111100
00000000
Table 1: Character Array (2)