Issue No. 06 - June (2009 vol. 58)
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/TC.2009.21
Heumpil Cho , Qualcomm, Inc., San Diego
Earl E. Swartzlander , University of Texas at Austin, Austin
Quantum-dot cellular automata (QCA) is an emerging nanotechnology, with the potential for faster speed, smaller size, and lower power consumption than transistor-based technology. Quantum-dot cellular automata has a simple cell as the basic element. The cell is used as a building block to construct gates and wires. Previously, adder designs based on conventional designs were examined for implementation with QCA technology. That work demonstrated that the design trade-offs are very different in QCA. This paper utilizes the unique QCA characteristics to design a carry flow adder that is fast and efficient. Simulations indicate very attractive performance (i.e., complexity, area, and delay). This paper also explores the design of serial parallel multipliers. A serial parallel multiplier is designed and simulated with several different operand sizes.
adders, cellular automata, multiplying circuits, nanotechnology, network synthesis, semiconductor quantum dots
H. Cho and E. E. Swartzlander, "Adder and Multiplier Design in Quantum-Dot Cellular Automata," in IEEE Transactions on Computers, vol. 58, no. 6, pp. 721-727, 2009.