A superpass-transistor (SPT) model is presented as anquantum-device candidate for future VLSI systems based onnmultiple-valued logic (MVL). A conceptual SPT structure based on thenideas of a lateral-resonant-tunnelling quantum-dot transistor (LQT) andna heterostructure FET is described. An important feature of the SPT isnits capability of MVL signal detection and generation. A superpass gaten(SP gate) corresponding to a single SPT is defined and is demonstratednto be a universal logic module for implementing highly compactnmultiple-valued VLSI systems. An algorithm suitable for synthesisingnminimal series-parallel SP-gate networks for MVL functions with manynvariables is proposed. The network allows both constants and variablesnas its pass inputs; accordingly, υ-subfunctions, where υ cannbe a constant or a variable, are defined. SP implicants, SPnsubimplicants and the consensus between SP subimplicants are alsondefined. The algorithm first generates all prime SP subimplicants fromnυ-subfunctions by using the consensus operation, then derives allnprime SP implicants by using the implication operation, and finallynselects an optimal set of prime SP implicants to cover the function bynusing existing methods
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