Design and Implementation of Low Power Arithmetic and Logic Unit Using Reversible Logic Gates

Abstract

TheReversible logic is gaining a prominent place in recent trends for low power computation. Optimization of power is required for portable devices like battery operated devices.  This can be designed by using reversible computation logic. It has wide range of applications in the fields of Optical computing, Quantum computing, Complementary Metal oxide semiconductor, Nanotechnology. The reversible computing can be performed by using reversible logic gates which can perform arithmetic and logical operations. Various reversible logic gates are analyzed to perform the above operations which helps in building arithmetic circuits with low power dissipation.The arithmetic circuits like adder, substractor, multiplier, Arithmetic logic unit which forms the basis to build combinational circuits is implemented by using reversible gates. In this paper a reversible ALU which forms the core of any processor is designed. A comparison is made between the conventional ALU and reversible ALU in terms of its power , delay and number of LUTs utilized. EDA tools like MODELSIM 10.5 is used for simulation and synthesized using XILINX VIVADO 2017.2  and the code is modeled using HDL like VERILOG