الفهرس 
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Abstract
Heat dissipation is one of the major problems in the construction of electronic devices. Reversible computing is one of the emerging computing paradigms to overcome heat dissipation problem. One of the nanoscale devices that has low power consumption and can be used to construct digital logic components is quantum-dot cellular automata (QCA). QCA is a novel nanotechnology that promotes high-performance computation with low heat dissipation. In this thesis, the benefits of reversible computing will be combined with QCA to propose QCA designs for two main reversible gates: the CNOT and the TOFFOLI gates, and the benefits of high-performance computation of QCA will be used to propose the basic arithmetic components XOR gate, half adder, full adder, and Ripple Carry Adder (RCA).