Positional number system:
In Positional number system, each symbol represents different value depending on the position they occupy in a number.
In Positional number system, each system has a value that relates to the number directly next to it. The total value of a positional number is the total of the resultant value of all positions.
Example of Positional number system:
22 can be 2 x 10 + 2 x 1, 10 + 2 = 22
Non-Positional number system:
In Non-Positional number system, each symbol represents the same value regardless of its position.
In Non-Positional number system, each symbol represents a number with its own place value.
Example of Non-Positional number system:
Roman number system, where I for 1, III for 3
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