254/16=15 餘數14，十六進位制形式E，二進位制形式1110

15/16=0 餘數15，十六進位制形式F，二進位制形式1111

254d=FEh=11111110b=011111110b=376o

每3位二進位制數轉換成1位八進位制數：000~111 <=> 0~7：

000 <=> 0

001 <=> 1

010 <=> 2

011 <=> 3

100 <=> 4

101 <=> 5

110 <=> 6

111 <=> 7

每4位二進位制數轉換成1位十六進位制數：0000~1001 <=> 0~9，1010~1111 => A~F

0000 <=> 0

0001 <=> 1

0010 <=> 2

0011 <=> 3

0100 <=> 4

0101 <=> 5

0110 <=> 6

0111 <=> 7

1000 <=> 8

1001 <=> 9

1010 <=> A

1011 <=> B

1100 <=> C

1101 <=> D

1110 <=> E

1111 <=> F