Adders like ripple carry adder, carry select adder, carry look ahead adder, carry skip adder, carry save adder exist numerous adder implementations each with good attributes and some drawbacks.

[Phillip] wanted to play with the C preprocessor. He decided to do that by creating a 4 bit full adder. We know this is pretty useless in everyday life, but it was a great learning experience.

In this adder, all the carry bits are computed in parallel ... The top part of the adder has eight circuits to produce the propagate and generate signals. These signals go into the 8-bit Kogge ...

This paper investigates four types of carry-tree adders the Brent-Kung, Kogge-Stone, the Slansky and Han-Carlson adder and compares them to the simple Ripple Carry Adder (RCA). Due to the presence ...

explaining how carry in and carry out works. Everything is modular, so four of his 4-bit adder cards eventually get together to form a 16-bit adder, which we assume will be used to build out a ...