Logic adders are IC (integrated circuits) semiconductor devices that have been designed to perform binary addition in computers and processors.
Logic Adders are widely used in processors to calculate table indices and addresses. Logic adders perform binary addition and account for values carried in and out as well as performing an addition operation on three one-bit binary numbers.
There are two main types of logic adders, a half adder and a full adder. The full adder produces a sum of the three inputs and carries the value. They can be combined with other full adders or work on its own. Logic adders can be composed of other gates and custom transistor-level circuits allowing them to implemented in many different ways. Half adders will perform addition of 2 individual binary digits, A and B and have 2 outputs, sum and carry.
Both half and full adders have a wide range of application use such as;