QCA based design of reversible carry lookahead generator

In nanoscale logic computing, dissipated heat and device area are the key areas of interest. Ideally zero heat dissipation can be achieved in reversible circuits by preserving information. Among several nano-devices, QCA has elevated functionality in designing reversible circuits at nanoscale. Rever...

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Bibliographic Details
Published in2017 Devices for Integrated Circuit (DevIC) pp. 180 - 184
Main Authors Das, Jadav Chandra, De, Debashis
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.03.2017
Subjects
BJN gate
carry lookahead generator
Clocks
Generators
Integrated circuit modeling
Inverters
Logic gates
majority gate
Nanoscale devices
QCA
Toffoli gate
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Summary:In nanoscale logic computing, dissipated heat and device area are the key areas of interest. Ideally zero heat dissipation can be achieved in reversible circuits by preserving information. Among several nano-devices, QCA has elevated functionality in designing reversible circuits at nanoscale. Reversible circuit for carry lookahead generator and its realization in QCA have been reported in this paper. To achieve the proposed design, Toffoli gate based reversible AND operation and BJN gate based reversible OR operations have been used. The designs are verified by comparing the simulation outcome with the theoretical values. This comparison establishes the computing accuracy of the proposed designs. The design can function as a heart for faster low power reversible parallel adder at nanoscale level.
DOI:10.1109/DEVIC.2017.8073932