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Rational Number
A number that can be expressed as a fraction
Natural Number
A positive whole number including 0.
Irrational number
A number that cannot be expressed as a fraction.
Real number
Any positive or negative number with or without a fractional part.
Ordinal number
A number used to identify a position relative to other numbers.
Cardinal number
A number that identifies the size of something.
Advantages of Floating Point...
A wider range of numbers can be produced with the same number of bits as the fixed point system.
Advantages of Fixed Point
Processing fixed point numbers is faster as no processing is required to move the binary point.
The absolute error will always be the same. This means that the precision is retained.
Where would you use fixed point over floating point?
In situations where speed is more important than precision, such as gaming.
Also for applications where a fixed precision is required, such as currency where the number of places after the binary point does not change.
Overflow
When a number is too large to be represented with the bits allocated.
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