# ieCivil

Engineering the Digital Civilization

## Sunday, 26 July 2015

A number system defines a set of values used to represent quantity.
The study of number system will give us an insight into how a computer manipulates and stores numbers.It is not only used in computers but also in various electronic devices.

## 2. Binary number system

• Any electronic device does not operate on Decimal number system and hencethe binary number system has gained importance specially in the electronics and computer systems.
• A binary uses only two digits '0' & '1' respectively.
• The binary digits(0 & 1)are also known as bits.Thus binary system is a two bit system.

• Above is an example how to interpret a binary number in terms of our basic decimal nos.

## 3.Octal Number System

• In order to represent large numbers in the binary format we will need huge strings of 0's and 1's.
• The octal system can be used for reducing the size of the large binary number.
• Each digit in the octal system will assume 8 different values from 0 to 7.