numeral system in base 16: it uses 16 digits, from 0 to 9 and from 'a' to 'f'.

there's a direct mapping between each possible combination of 4 bits (nibble), and an hexadecimal (hex) digit:

binary | hex | dec |
---|---|---|

0000 | 0 | 0 |

0001 | 1 | 1 |

0010 | 2 | 2 |

0011 | 3 | 3 |

0100 | 4 | 4 |

0101 | 5 | 5 |

0110 | 6 | 6 |

0111 | 7 | 7 |

1000 | 8 | 8 |

1001 | 9 | 9 |

1010 | a | 10 |

1011 | b | 11 |

1100 | c | 12 |

1101 | d | 13 |

1110 | e | 14 |

1111 | f | 15 |

# 24 bits

24 bits correspond to: