• Kishore Prabhala
• Prof. Prabhandhakam Sangameswara Raju

Adding two 128 bits numbers has been common with microprocessors with over 1 GHz and memory capacity raced over 40 bits or Tera bits in PC or Smart Phones. Ripple Carry Adder (RCA) is the simplest technique with almost lowest area and a comparative power factor when compared to other adder techniques. This paper will present simulation and layout of 128 addition from a 64 bits, 4 bits, full adder, and half adder with Mentor and Microwind tools at 90 nm technology based on CMOS 28 or 24 transistor full adder layouts.

Ripple Carry Adder, Addition, CMOS, Layout, 90 nm Technology

"An Evaluation of 128 bit Addition using Ripple Carry Adder with Layout based on CMOS 28 Transistor and 24 Transistor Full Adder in 90 nm Technology", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.761-768, June 2019, Available :http://www.jetir.org/papers/JETIR1908581.pdf

"An Evaluation of 128 bit Addition using Ripple Carry Adder with Layout based on CMOS 28 Transistor and 24 Transistor Full Adder in 90 nm Technology", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp761-768, June 2019, Available at : http://www.jetir.org/papers/JETIR1908581.pdf