Types of Number System: Non-Positional and Positional

Types of Number System:

1. Non-Positional System
2. Positional System

Non-Positional Number System:

In the non-positional system, the characters used are I for 1, II for 2, etc. and are of position invariant, i.e. each symbol represents the same value regardless of its position in the number. Since it is very difficult to perform arithmetic calculations with such a number system, positional number systems were developed.

Positional Number System:

In positional number system, there are only a few symbols called digits, and these symbols represent different values depending on the position they occupy in the number. The value of each digit in such a number is determined by three considerations:

1. The digit itself,

2. The position of the digit in the number, and

3. The base of the number system.