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  Computers drive the digital world today, propelling everything from laptops and mobiles to video games and supercomputers.  Whether you're building a PC, buying a new laptop, or simply wondering how your machine runs, having knowledge about the key components of a computer is paramount.  Each plays a specific role, and together, they form an operating system that can perform millions or even billions of calculations a second. In this guide, we’ll break down the most important computer components CPU, GPU, RAM, motherboard, storage drives, power supply, and cooling systems explaining what they are, how they work, and why they matter. #1 Central Processing Unit (CPU): The CPU, or sometimes referred to as the "brain" of the computer, performs the majority of the math calculations and operations your computer must perform.  Every time you open a file, run a program, or play a video game, your CPU is at work. Key Features: Cores and Threads: Modern CPUs have multiple co...