ASCII

 The following table represents the ASCII character set (characters
 with decimal values 0 through 127).  Except for SP and HT, the
 characters with names are nonprintable.

 To determine the hexadecimal value of an ASCII character, combine
 the values in the column (0-7) and the row (0-F) that relate to the
 character.  For example, the value of the character representing
 the equal sign is 3D(hex).





   +------------------------------------------+
   |     0     1     2    3   4   5   6   7   |
   +---+--------------------------------------+
   | 0 | NUL   DLE   SP   0   @   P   `   p   |
   | 1 | SOH   DC1   !    1   A   Q   a   q   |
   | 2 | STX   DC2   "    2   B   R   b   r   |
   | 3 | ETX   DC3   #    3   C   S   c   s   |
   | 4 | EOT   DC4   $    4   D   T   d   t   |
   | 5 | ENQ   NAK   %    5   E   U   e   u   |
   | 6 | ACK   SYN   &    6   F   V   f   v   |
   | 7 | BEL   ETB   '    7   G   W   g   w   |
   | 8 | BS    CAN   (    8   H   X   h   x   |
   | 9 | HT    EM    )    9   I   Y   i   y   |
   | A | LF    SUB   *    :   J   Z   j   z   |
   | B | VT    ESC   +    ;   K   [   k   {   |
   | C | FF    FS    ,    <   L   \   l   |   |
   | D | CR    GS    -    =   M   ]   m   }   |
   | E | SO    RS    .    >   N   ^   n   ~   |
   | F | SI    US    /    ?   O   _   o   DEL |
   +---+--------------------------------------+

 The characters with names are defined as follows:


   NUL   Null             DC1   Device Control 1(XON)
   SOH   Start of         DC2   Device Control 2
           Heading
   STX   Start of Text    DC3   Device Control 3(XOFF)
   ETX   End of Text      DC4   Device Control 4
   EOT   End of           NAK   Negative Acknowledge
           Transmission
   ENQ   Enquiry          SYN   Synchronous Idle
   ACK   Acknowledge      ETB   End of Transmission 
                                  Block
   BEL   Bell             CAN   Cancel
   BS    Backspace        EM    End of Medium
   HT    Horizontal Tab   SUB   Substitute
   LF    Line Feed        ESC   Escape
   VT    Vertical Tab     FS    File Separator
   FF    Form Feed        GS    Group Separator
   CR    Carriage Return  RS    Record Separator
   SO    Shift Out        US    Unit Separator
   SI    Shift In         SP    Space
   DLE   Data Link        DEL   Delete
           Escape