十进制，十六进制，二进制

Decimal     Hexadecimal        Binary
   0     =     0x00     =     0000-0000
   1     =     0x01     =     0000-0001
   2     =     0x02     =     0000-0010
   3     =     0x03     =     0000-0011
   4     =     0x04     =     0000-0100
   5     =     0x05     =     0000-0101
   6     =     0x06     =     0000-0110
   7     =     0x07     =     0000-0111
   8     =     0x08     =     0000-1000
   9     =     0x09     =     0000-1001
  10     =     0x0A     =     0000-1010
  11     =     0x0B     =     0000-1011
  12     =     0x0C     =     0000-1100
  13     =     0x0D     =     0000-1101
  14     =     0x0E     =     0000-1110
  15     =     0x0F     =     0000-1111