The Hexadecimal number system(also known as Base-16) has sixteen possible values for each digit - 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F. All the modern electronic computer systems understand only the binary format (also known as Base-2) which has only two possible values - 0(OFF) and 1(ON).


Here is a sample map of few hex values along with their corresponding binary values:


Hexadecimal 0 1 2 3 4 5 6 7 8 9 A B
Binary 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011
Decimal C D E F
Binary 1100 1101 1110 1111