In: Electrical Engineering
In your own words, and based in your understanding on the topic, write a small paragraph about the purpose and importance of using half-adder and full-adder logic circuits, their differences, some potential applications, and why they are useful in digital system
Adder is the logic circuit which can perform addition of two binary numbers. Mainly it is designed for addtion of two binary numbers but can be used for other purposes like address decoding, subtraction using complement method.
Half Adder
In half adder there are two inputs and two outputs, one output is sum of two digits and other is carry from the addition of two digits. With the help of half adder a circuit which is capable of performing simple additon of two binary numbers can be designed.
However the main disadvantage of half adder is that only addition of two numbers can be performed. If the carry is generated it is neglected. To overcome this problem Full adder is used.
Full Adder
The main difference with respect to half adder is that here there are three inputs and two ouptputs. With the same two inputs as that of half adder, the additional input is carry bit. Full adders are mainly used for performing multi bit operation.