# 1. Types of data representation- introduction

Post date: 01-Jul-2014 04:42:36

### Number systems and their representation

As stated earlier in the chapter, computer represent data in a form that can be manipulated either logically or mathematically. There are various forms, however here we are going to discuss 4 of them as provided by the syllabus.

### Classifications of number systems

Decimal number system

Decimal number system has ten digits ranging from 0-9. because this system has ten digits. its also called base 10 number system or denary number system.

Binary number system

Binary is another way of saying Base Two. So, in a binary number system, there are only two symbols used to represent numbers: 0 and 1. When we count up from zero in binary, we run out of symbols much more frequently.

Octal number system

Octal is another number system with less symbols to use than our conventional number system. Octal is fancy for Base Eight meaning eight symbols are used to represent all the quantities. They are 0, 1, 2, 3, 4, 5, 6, and 7. When we count up one from the 7, we need a new placement to represent what we call 8 since an 8 doesn't exist in Octal.