Difference between Full Adder and Half Adder
Full Adder is a combinational circuit that forms the arithmetic sum of three input bits. It consists of three inputs and two outputs. Two of the input variables are denoted by x and y. It represents the two significant bits to be added. The third input, z represents the carry from the previous lower significant position.
It is the most basic digital arithmetic circuit is the addition of two binary digits. A combinational circuit that performs the arithmetic addition of two bits is called a half-adder.
Full Adder vs Half Adder:
|1. Full adder circuit is complicated
|1. Half adder circuit is simple
|2. It is a combinational circuit which adds three 1-bit digits
|2. It is a combinational logic circuit which adds two 1-bit digits
|3. Half Adder is combinational logic circuit which adds two 1-bit digits
|3. It is used for 2-bit addition
|4. Carry generated from previous addition is added in the next step
|4. Carry generated from previous addition is not added in next step
|5. It consists of two EX-OR, two AND gate and one OR gate
|5. It consists of one EX-OR gate and one AND gate
|6. Applications: Multiple bit addition, digital processors etc.
|6. Applications: Calculators, computers, digital measuring devices etc.