In this research, I would like to present RISC-V, which is extensible, royalty free and open Reduced Instruction Set Computer (RISC) ISA. It means that any chip manufacturer can create CPUs that use this instruction set using preferred optional extensions without having to pay royalties. With its open license business model, anyone can leverage the IP (Intellectual Property) contributed and produced by RISC-V International. It is an emerging ISA that is driven through open collaboration, bringing together different companies, industries, and geographies. RISC-V is suitable for a wide range of applications, from simple microcontrollers to high-performance CPUs. Full Instruction Set Manual can be accessed at the official website of RISC-V International. Therefore, in this research, I will outline the fundamental properties of the RISC-V ISA in order to better comprehend and analyze its applications on a wide scale.