ASCII  CHARACTER VALUE TABLE

                 DECIMAL
                   BASE      0     16    32    48    64    80    96   112

                   HEX
                 MS CHAR     0     1     2     3     4     5     6     7

                  BINARY
                 MS NYBBLE  0000  0001  0010  0011  0100  0101  0110  0111

  DECIMAL  HEX    BINARY
   ADDER LS CHAR LS NYBBLE+------------------------------------------------
     0      0      0000   | NUL   DLE  space   0     @     P     `     p
                          |
     1      1      0001   | SOH   DC1    !     1     A     Q     a     q
                          |
     2      2      0010   | STX   DC2    "     2     B     R     b     r
                          |
     3      3      0011   | ETX   DC3    #     3     C     S     c     s
                          |
     4      4      0100   | EOT   DC4    $     4     D     T     d     t
                          |
     5      5      0101   | ENQ   NAK    %     5     E     U     e     u
                          |
     6      6      0110   | ACK   SYN    &     6     F     V     f     v
                          |
     7      7      0111   | BEL   ETB    '     7     G     W     g     w
                          |
     8      8      1000   |  BS   CAN    (     8     H     X     h     x
                          |
     9      9      1001   |  HT    EM    )     9     I     Y     i     y
                          |
    10      A      1010   |  LF   SUB    *     :     J     Z     j     z
                          |
    11      B      1011   |  VT   ESC    +     ;     K     [     k     {
                          |
    12      C      1100   |  FF    FS    ,     <     L     \     l     |
                          |
    13      D      1101   |  CR    GS    -     =     M     ]     m     }
                          |
    14      E      1110   |  SO    RS    .     >     N     ^     n     ~
                          |
    15      F      1111   |  SI    US    /     ?     O     _     o    DEL
                             \..,,../
                              Control
                             Characters

         Combine column and row values to yield ASCII numeric value.

         EXAMPLES:
                     Character  E  =   64 + 5 = 69 Decimal
                                   =   45 Hexadecimal
                                   =   0100 0101 Binary

         Pressing CONTROL and a key from columns 4 or 5 (Hex) will/should
	 generate control codes from columns 0 or 1 respectively.
           ie -  CTRL-A produces SOH,  CTRL-Q produces DC1