Why hexadecimal is used?
•110001010011  (binary notation)
•3155dec = 1*211 + 1*210 + 0*29 + 0*28 + 0*27 + 1*26 + 0*25 + 1*24 + 0*23 + 0*22 + 1*21 + 1*20
•110001010011   is C53 in hexadecimal
•12dec 5dec   3dec
•Chex   5hex  3hex 
•In WinDbg memory addresses are always displayed in hexadecimal notation