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It has been suggested that this article or section be merged into Asynchronous circuit. (Discuss) |
Asynchronous logic is the logic required for the design of asynchronous digital systems. These function without a clock signal and so individual logic elements cannot be relied upon to have a discrete true/false state at any given time. Boolean logic is inadequate for this and so extensions are required. Karl Fant developed a theoretical treatment of this in his work Logically determined design in 2005 which used four-valued logic with null and intermediate being the additional values.[1] V.O. Vasyukevich developed a different approach based upon a new logical operation which he called vennjunction. This takes into account not only the current value of an element, but also its history.[2]
References
- ^ Karl M. Fant (2005), Logically determined design: clockless system design with NULL convention logic, John Wiley and Sons, ISBN 9780471684787, http://books.google.co.uk/books?id=UTHFcdvvHQcC
- ^ V.O.Vasyukevich (April, 2007), "Decoding asynchronous sequences", Automatic Control and Computer Sciences (Allerton Press) 41 (2): 93-99, doi:, ISSN 1558-108X, http://www.springerlink.com/content/e61016374u41p176/
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