OK, here are the values from the 1st line of your table, shown in your original Hex, plus the corresponding Binary and Decimal representations, and ASCII characters (where applicable):

Hex:     0x82,    0x90,    0xE8,    0x23,    0x86,    0x05,    0x4C,    0xF8 
Binary:  10000010 10010000 11101000 00100011 10000110 00000101 01001100 11111000
Decimal: 130      144      232      35       134      5        76       248
ASCII:                              #                 ENQ      L

Note that ASCII only covers the values 0-127 (7 bits), and 0-31 are non-printing control characters.
Various applications have their own proprietary definitions for character codes 128-255; eg, here's the IBM-PC set: http://www.8052.com/users/awneil/charset.gif

Note that the Windows calculator can do Hex!