A Full Adder is a digital circuit that performs the arithmetic operation of addition on three binary inputs: two significant bits and a carry bit from a previous addition. It produces two outputs: a sum bit and a carry bit. The Full Adder is essential in building more complex arithmetic circuits, such as those found in binary adders. Full Adders can be combined to create a ripple carry adder, which allows for the addition of multi-bit binary numbers. Each Full Adder processes one bit at a time, passing the carry to the next stage. This design is fundamental in computer architecture and digital electronics.