Institute of Electrical & Electronic Engineers
Nanotechnologies, including molecular Quantum dot Cellular Automata (QCA), are susceptible to high error rates. In this paper, the authors present the design of concurrently testable latches (D latch, T latch, JK latch, and SR latch), which are based on reversible conservative logic for molecular QCA. Conservative reversible circuits are a specific type of reversible circuits, in which there would be an equal number of 1's in the outputs as there would be on the inputs, in addition to one-to-one mapping. Thus, conservative logic is parity-preserving, i.e., the parity of the input vectors is equal to that of the output vectors.