A Central Processing Unit (CPU) is the brain of a computer, responsible for executing instructions and performing calculations that drive the entire system's functionality. It acts as the control unit, fetching instructions from memory, decoding them, and executing operations. Modern CPUs are incredibly powerful, capable of handling complex tasks ranging from running applications and managing data to performing intricate mathematical computations. CPUs come in various architectures, with multiple cores and increasingly sophisticated technologies to enhance performance and efficiency. As the heart of every computer, the CPU plays a pivotal role in determining a system's overall speed and capabilities.
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