Static combinatorial logic circuits for reversible computation
AssigneeInternational Business Machines Corporation
InventorDavid J. Frank
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Abstract
A combinational logic circuit composed of FETs connected together to perform a dual-rail combinatorial logic function, in which one portion of the circuitry is an original logic circuit portion that is connected to a variable power source and creates the desired logic function, and the remaining portion of the circuit is a complement logic circuit portion that is connected a constant power source and creates the complementary logic function. The two portions of the circuitry are connected together in combination at the output to form a dual-rail output signal useful for reversible computation.
Claims13
A static combinatorial switching logic circuit comprising:
- a first power source for providing a first power signal,
- a second power source for providing a second power signal, wherein at least one of said first and second power signals is an AC signal,
- a source of a plurality of logic signals,
- a first logic circuit connected to said first power source and to said source of said plurality of logic signals for providing a first output signal that is a logic combination signal, and a second logic circuit connected to said second power source and to said source of said plurality of said logic signals for providing a second output signal that is a logic combination signal, said second output logic combination signal being the logical complement of said first output logic combination signal, and means connected to said first and second logic circuits for combining said first and second output logic combination signals.
Dependencies are inferred from the claim text.