Design and Implementation of Arithmetic Logic Unit in HDL
Design and Implementation of Arithmetic Logic Unit in HDL | Arithmetic logic unit (ALU) is an important part of all digital gadgets and applications. This paper presents the design and implementation of an 8-bit Arithmetic Logic Unit (ALU) with a capability to perform eight distinct operations. ALUs are fundamental components in the central processing units (CPUs) of microprocessors and are responsible for executing arithmetic and logical operations. The primary objective of this research is to design an efficient and versatile 8-bit ALU that can execute a wide range of operations while optimizing for performance and area efficiency. The proposed 8-bit ALU is designed to perform the following eight operations: Ripple carry addition, Ripple borrow subtraction, Array multiplication, XOR operation, left shift, right shift, NAND operation and a logical NOR operation. The research presents a detailed description of the ALU's architecture, its constituent components, and the control mechanism for selecting operations. Performance metrics, such as speed, area efficiency, and power consumption, are analyzed and compared with Xilinx FPGA.