A logic glitch is a kind of unwanted noise, its presence in the output signal can initiate an uncontrollable process, in the next level which is an input signal. There can be distinguished three types of noise that are introduced in (CLC) Combinational Logic Circuits, called hazards (Static, Dynamic and Function Hazards). In this paper, the authors continue the research that consists of a comparative study of two methods to eliminate the static hazard from logical functions, by using the form of POS – Product of Sums, static hazard “0”.
In the first method it’s used the consensus theorem to
determine the cover term that is equal to the product of the two residual
implicants, and in the second method, it’s resolved a Boolean equation system.
The authors observed that in the second method, the digital hazard can be
earlier detected. If the Boolean equation system is incompatible (doesn’t have
solutions), the considered logical function doesn’t have the static 1 hazard
regarding the coupled variable. Using logical computations, this method permits
to determine the needed transitions to eliminate the digital hazard.
Author(s) Details:
Mihai Grigore Timis,
Automatic Control and Computer Engineering Faculty, Technical University Gheorghe Asachi Iasi, Romania.
Alexandru Valachi,
Automatic Control and Computer Engineering Faculty, Technical University Gheorghe Asachi Iasi, Romania.
Alexandru Barleanu,
Automatic Control and Computer Engineering Faculty, Technical University Gheorghe Asachi Iasi, Romania.
Andrei Stan,
Automatic Control and Computer Engineering Faculty, Technical University Gheorghe Asachi Iasi, Romania.
Please see the link here: https://stm.bookpi.org/RUMCS-V2/article/view/13940
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