Parallel Adder Waveform. It consists of full adders connected in a chain. A parallel adder is an arithmetic combinational logic circuit that is used to add more than one bit of data simultaneously.
A parallel adder is an arithmetic combinational logic circuit that is used to add more than one bit of data simultaneously. The number of full adders in a parallel binary adder depends on the number of bits present in the number for the addition. Parallel prefix adders ppa are one among them.
To understand the working principle of parallel adder let us understand the construction of parallel adder as shown in the fig.
4 bit parallel adder is designed using 4 full adders fa 0 fa 1 fa 2 fa 3 full adder fa 0 adds a 0 b 0 along with carry c in to generate sum s 0 and carry bit c 1 and this carry bit. A parallel adder adds corresponding bits simultaneously using full adders. It is composed of four full adders. It is a serial adder.
