Study of Reversible Arithmetic Logic Units using Bi-directional Logic Gates

The increasing demand for high-speed, portable electronic devices has led to the design of processors with reduced size, time, and power consumption. The arithmetic logic unit is the fundamental block of the processor. The performance of the ALU has direct impact on the performance of the processor. To increase the speed of the processor, the speed of the arithmetic logic unit has to be increased. An arithmetic and logic unit design which can perform arithmetic functions such as addition, subtraction, multiplication, division and logic functions such as AND, OR, NOT, NAND, NOR, EXOR, EXNOR, BUFFER with inputs and outputs format is designed. In this paper the study of different research paper based on arithmetic logic unit and reversible logic gate. It is also explain the objective and scope of the future work.