1Department of Electronics and Communication Engineering, Guru Nanak Institutions Technical Campus, Hyderabad, Telangana-501506, India
2Department of Electronics and Communication Engineering, National Institute of Technology, Warangal, Telangana-506004, India
Online published on 27 June, 2017.
In this paper a high speed Kogge-Stone, Ladner Fischer and Knowles adders have been proposed by modifying the existing architectures. Kogge-Stone is one of the fastest parallel prefix adders. The redundant Black-Cells were eliminated and rerouting has been performed. The results of the modified adders were compared with the conventional ones and an improvement has been achieved in terms of reduced delay.
Parallel-prefix adders, redundant black-cells, Gray cell, Kogge-Stone Adder, Ladner Fischer Adder, Knowles adder
