Problems in designing with QCAs: Layout = Timing
Michael Thaddeus Niemier, Peter Michael Kogge · International Journal of Circuit Theory and Applications · 2001
The quantum cellular automata (QCA) is currently being investigated as an alternative to CMOS VLSI. While some simple logical circuits and devices have been studied, little if any work has been done in considering the architecture for systems of QCA devices. This work discusses the progress of one of the first such efforts. Namely, the design of dataflow components for a simple microprocessor being designed exclusively in QCA are discussed. Problems associated with initial designs and enumerated solutions to these problems (usually stemming from floorplanning techniques) are explained. Finally, areas of future research direction for circuit design in QCA are presented. Copyright © 2001 John Wiley & Sons, Ltd.