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Decimal / Binary / Octal / Hexadecimal Numbering Systems
The '''binary''' numbering system is a numbering system where each digit can be represented by numbers 0 or 1. Digital computers have data-paths that can represent those 0s and 1s based on voltage levels.
 
The numbering system is based on sums of the power of 2.
 
According to the diagram to the right, each digit moving to the left of units value is the placeholder multiplied to the power of two. Units are ten to the power of zero (which is 1), then two to the power of one (which is 2), etc.
 
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''Octal / Hexadecimal Numbers''
 
The '''octal''' and ''hexadecimal'' numbering systems are represented by values of 0 - 7 and 0 - F respectively. For hexadecimal numbers, values for 10 to 15 (which can only be represented by a single digit) use letters a to f respectively.
The numbering system is based on sums of the power of 2.

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