8-bit Arithmetic Logic Unit (ALU) using full swing restored M-GDI technique

The ALU is an essential operational unit found in every processor, serving as the core component of the CPU. It performs most of the fundamental operations, including logical and arithmetic operations. In this paper, an 8-bit Arithmetic Logic Unit (ALU) is developed using swing restored M-GDI technique and compared with the previous M-GDI technique. The M-GDI technique is area and power efficient technology but the output swing is not obtained fully. To solve this problem a swing restored M-GDI technique applied to previous circuits. The ALU is responsible for performing logic operations (AND, OR, XOR) and arithmetic operations (ADDER, SUBTRACTOR, MAGNITUDE COMPARTOR) using three logic gates: AND, OR, and XOR. The output of the ALU is determined by the input select line and given to the multiplexer. The average power, number of transistors, and delay are the key factors used to evaluate the performance of the ALU, which is implemented in the software CADENCE VIRTUOSO.