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A central processing unit (CPU), also called a central processor, main processor, or just processor, is the most important processor in a given computer. [1] [2] Its electronic circuitry executes instructions of a computer program , such as arithmetic , logic, controlling, and input/output (I/O) operations.
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The history of general-purpose CPUs traces the evolution of the central processing unit, the core component of every computer. This article covers the major milestones and innovations that shaped the design and performance of CPUs, from the early days of vacuum tubes and transistors to the modern era of microprocessors and multicore architectures. Learn more about the history of general-purpose CPUs on Wikipedia.
A microprocessor is a computer processor for which the data processing logic and control is included on a single integrated circuit (IC), or a small number of ICs. The microprocessor contains the arithmetic, logic, and control circuitry required to perform the functions of a computer's central processing unit (CPU).
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