Analysis and comparative study of 8-bit adder for embedded application

Digital computations and calculations is involved in every embedded and processing device, these devices has arithmetic logic unit or a special block to perform a desired operation, Addition can be one such operation, adders are most important and fundamental block used for Addition, Subtraction, Multiplication, Division, Address generation and so on, design and selection of adders for a embedded application plays a very important role, this paper presents a comparative survey, study and analysis of four different adders like Ripple Carry Adder, Carry Skip Adder, Carry Look ahead Adder, and Kogge Stone Adder, with precession of 8-bit using Verilog HDL coding and the tabulation of performance metrics as delay and area is performed. Given an embedded application may use adder block as its core operation for other sub operations this adder block may be chosen based on its performance and application where it is used.