Weak bit of weight
The weak bit of weight (in English Least Significant Bit , or LSB ) is for a binary number the bit having in a given representation the least value (that of right-hand side in the positional representation usual).
Example, for a simple number of conventional binary representation, the LSB is the bit on the right: 0101011 0 .
On the other hand, there is the Bit of strong weight (MSB).
Note that the distinction is sometimes made between lsb writes in small letters for Least Significant Bit , and LSB in capital letters (for English Least Significant Byte ), which then indicates the weak byte of weight in a number made up of several bytes.
Digitized signal
At the time of the quantification, a stage of the Digitalization, the weak bit of weight corresponds to the smallest variation of electric tension than can return the signal discretized, the not of discretization . One thus uses the LSB as unit to define sizes as the Linéarité of digitalization or the Distorsion introduced by this one. In the ideal, the distortion should be 1 LSB: the difference between the real level and the discrete level would be then the step of discretization.
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