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Issue No.02 - February (1986 vol.35)
pp: 124-133
M.H. Abd-El Barr , Department of Electrical Engineering, University of Toronto
Basic multivalued building blocks constructed using CCD (charge-coupled devices) technology are presented. They are used to realize simple threshold functions. Existing techniques for decomposition of multivalued multithreshold functions into simpler subfunctions are reviewed. Usage of the CCD technology in implementation of these subfunctions is discussed. Two new decomposition techniques are proposed. Their aim is to obtain realizations that are better suited to CCD technology in terms of the maximum number of thresholds per element and the generation of negative weights. Synthesis techniques based on the proposed decompositions are presented and compared. Although 4-valued logic functions are stressed, the techniques are, in principle, applicable to functions of any radix.
multivalued logic, CCD realization of MVL functions, charge- coupled devices, function decomposition, function synthesis, multithreshold functions
M.H. Abd-El Barr, S.G. Zaky, Z.G. Vranesic, "Synthesis of Multivalued Multithreshold Functions for CCD Implementation", IEEE Transactions on Computers, vol.35, no. 2, pp. 124-133, February 1986, doi:10.1109/TC.1986.1676730
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