Binary Numbers
Given a binary number, add up the
powers of 2 corresponding to 1s
1010 0000
       0x20   = 0x1     = 0
       0x21   = 0x2     = 0
       0x22   = 0x4     = 0
       0x23   = 0x8     = 0
       0x24   = 0x16     = 0
       1x25   = 1x32     = 32
       0x26   = 0x64     = 0
       1x27   = 1x128   = 128
               = 160