• Pradyumna P Burly
• K B Ramesh

The adder is a critical component of the ALU and plays a very significant role in determining the performance of a computer system. It is very much required to use an optimized adder for enhanced performance of the ALU and improved overall system performance. This Review paper will show you how various researchers have created a low-power consumption-based adder circuit based on length of transistor. This paper presents a Review on adder circuit design for transistor sizes of 65nm and 90nm. The major goal is to build a prototype for Low Powered VLSI Technology to develop an adder circuit that consumes less power while maintaining high performance than the regular design that uses 28T CMOS logic. The adder is the most basic component of the ALU, and it is used in almost all arithmetic operations. In many cases, it is also used in the implementation of other operations, such as subtraction and multiplication. The performance of the adder directly impacts the performance of the ALU and, therefore, the overall performance of the computer system. A slow or inefficient adder can lead to long wait times for the completion of arithmetic operations, which can result in poor system performance. An optimized adder, on the other hand, can greatly improve the performance of the ALU. By reducing the time, it takes to perform an addition operation, the ALU can complete other operations more quickly, resulting in improved overall system performance.

Carry-look ahead adder, ALU, VLSI, CMOS, NMOS, Low-power transistor, Memory Enhancement, Pass Transistor logic, Multiplexer, Power Delay Product

"Optimizing Conventional Full Adder Design for Enhanced ALU Performance", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 8, page no.e126-e131, August-2023, Available :http://www.jetir.org/papers/JETIR2308413.pdf

"Optimizing Conventional Full Adder Design for Enhanced ALU Performance", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 8, page no. ppe126-e131, August-2023, Available at : http://www.jetir.org/papers/JETIR2308413.pdf