# Data Representation

Data Representation

# Digital Number System

In digital representation , various number systems are used. The most common number system used are :

• Decimal number system
• Binary number system
• Ocatl number system

## Decimal number system

• Decimal number system is composed of 10 digits.
• Digits used in decimal number system are 0,1,2,3,4,5,6,7,8 and 9.
• Base of decimal number system is 10.

## Binary number system

• Binary number system is composed of 2 digits.
• Digits used in binary system are 0 and 1.
• Base of binary system is 2.

## Octal number system

• Octal number system is composed of 8 digits.
• Digits used in octal number system are 0,1,2,3,4,5,6 and 7.
• Base of octal number system is 8.

• Hexadecimal number is composed of 16 digits.
• Digits used in hexadecimal number system are 0,1,2,3,4, 5,6,7,8,9, A(10), B(11), C(12),D(13),E(14) and F(15).
• Base of hexadecimal number system is 16.

## Conversions

1. Decimal to binary conversion
2. Binary to decimal conversion
3. Decimal to octal conversion
4. Octal to decimal conversion