• G.HINDUJA
• S.KOTESWARI

In this paper, a reverse carry propagate adder (RCPA) is presented. In the RCPA structure, the carry signal propagates in a counter-flow manner from the most significant bit to the least significant bit; hence, the carry input signal has higher significance than the output carry. This method of carry propagation leads to higher stability in the presence of delay variations. Three implementations of the reverse carry propagate full-adder (RCPFA) cell with different delay, power, energy, and accuracy levels are introduced. The proposed structure may be combined with an exact (forward) carry adder to form hybrid adders with tunable levels of accuracy. Further this project is enhanced by using square root modified carry select adder. This enhancement improves the area time optimizations in adder implementations.

Reverse Carry Propagate Adder, Inexact adder, Accuracy, Digital Signal processing, Carry select adder.

"ENERGY EFFICIENT LOW DENSITY ADDER FOR ENHANCED DSP APPLICATIONS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.18-28, June 2019, Available :http://www.jetir.org/papers/JETIR1906O03.pdf

"ENERGY EFFICIENT LOW DENSITY ADDER FOR ENHANCED DSP APPLICATIONS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp18-28, June 2019, Available at : http://www.jetir.org/papers/JETIR1906O03.pdf