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5. Fixed-point representation
Whatever the number of bits in a word, the minimum distance between two integers is 1. The purpose of fixed-point representation is to introduce fractional numbers, by placing a comma at a certain point, with the digits before the comma corresponding to positive powers of 2, and those after the comma to negative powers of 2.
Consider an 8-bit word (figure
6
) where the binary decimal point is located to the right of the B
0
bit. The number N is then
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Fixed-point representation
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