Kinds of Number Systems

1. Decimal Number System

• It consists of 10 digits—0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.
• All numbers in this number system are represented as combination of digits 0—9.
Example : 34, 5965 and 867321.
• The position value and quantity of a digit at different positions in a number are as follows— 2. Binary Number System

• The binary number system consists of two digits—0 and 1.
• All binary numbers are formed using combination of 0 and 1.
Example : 1001, 11000011 and 10110101.
• The position value and quantity of a digit at different positions in a number are as follows— 3. Octal Number System

• The octal number system consists of eight digits—0 to 7.
• All octal numbers are represented using these eight digits.
Example :273, 103, 2375, etc.
• The position value and quantity of a digit at different positions in a number are as follows— 4. Hexadecimal Number System

• The hexadecimal number system consists of sixteen digits—0 to 9, A, B, C, D, E, F, where (A is for 10, B is for 11, C-12, D-13, E-14, F-15).
• All hexadecimal numbers are represented using these 16 digits.
Example :3FA, 87B, 113, etc.
• The position value and quantity of a digit at different positions in a number are as follows— 