Single‐bit digital comparator circuit design using quantum‐dot cellular automata nanotechnology

The large amount of secondary effects in complementary metal–oxide–semiconductor technology limits its application the ultra-nanoscale region. Circuit designers explore a new for region, which is quantum-dot cellular automata (QCA). Low-energy dissipation, high speed, and area efficiency are key features QCA technology. This research proposes novel, low-complexity, QCA-based one-bit digital comparator circuit performance proposed presented detail this paper compared with that existing designs. structure only consists 19 cells two clock phases. Designer-E Pro tools applied to estimate total energy dissipation. saves 24.00% cells, 25.00% cell area, 37.50% layout cost, 78.11% dissipation best reported similar design.