Computer Architecture refers to the design and organization of a computer's components and systems. It encompasses the structure of the hardware, including the central processing unit (CPU), memory, and input/output devices. This architecture determines how these components interact and work together to execute instructions and process data. The main goal of computer architecture is to optimize performance, efficiency, and cost. It involves various levels of abstraction, from low-level hardware design to high-level system organization. Understanding computer architecture is essential for developing software and hardware that can effectively utilize a computer's capabilities.