Arithmetic Logic Unit (ALU) is a fundamental component in digital circuits that performs arithmetic and logical operations. The implementation of ALU with Hardware Description Language (HDL) on Field-Programmable Gate Arrays (FPGAs) offers a flexible and cost-effective solution for custom logic design. FPGAs provide reconfigurable hardware that can be programmed to implement any digital circuit, including ALU, with the help of HDLs like Verilog or VHDL. HDL-based ALU design allows designers to tailor the logic operations and input/output interfaces according to their application requirements. This enables the creation of optimized and efficient ALUs for a wide range of applications, such as microcontrollers, digital signal processing, and artificial intelligence.