A Novel Design of Digital Circuits Using Reversible Logic Synthesis

Abstract

In digital circuits, energy and power dissipation are the main concern. The loss of information is depicted in the form of heat that results in power dissipation. In digital system design, many gates are not reversible, like AND, OR, XOR, and so on. Logic that does not result in loss of information is called reversible. Reversible computing is enabled by a theorem of modern physics proposed by the von Neumann Landauer (VNL) principle, which explains that irreversible logic operations acquire a primary minimum energy cost. Reversible logic (RL) has received immense consideration in recent years due to its capability to reduce power dissipation. In this chapter, the authors have implemented different universal gates using reversible logic. There are six different types of reversible gates, based on simulation and evaluation of different parameters using Verilog and SPICE; the Toffoli gate shows remarkable results. Using a Toffoli gate, different combinational and sequential circuits are designed and simulated using both reversible and irreversible logic. It has been observed that using reversible logic shows exceptional results.