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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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If based on the von Neumann architecture, they contain at least a control unit (CU), an arithmetic logic unit (ALU), and processor registers. In practice, CPUs in personal computers are usually also connected, through the motherboard , to a main memory bank, hard drive or other permanent storage , and peripherals , such as a keyboard and mouse .
Processor SOCs Other products ARM1 ARM1 ARM Evaluation System second processor for BBC Micro: ARM2 ARM2 Acorn Archimedes, ChessMachine: ARM250 ARM250 Acorn Archimedes ARM3 ARM3 Acorn Archimedes ARM60 ARM60 3DO Interactive Multiplayer, Zarlink GPS receiver ARM610 ARM610 Acorn Risc PC 600, Apple Newton 100 series: ARM700: ARM700
An all-in-one computer (also called an AIO or all-in-one PC) is a type of personal computer that integrates the computer components, such as the CPU, monitor, and speakers, into a single unit. It occupies a smaller footprint than a desktop computer with a tower form factor , and also uses fewer cables.
See also References External links A Accelerated Graphics Port (AGP) A dedicated video bus standard introduced by INTEL enabling 3D graphics capabilities; commonly present on an AGP slot on the motherboard. (Presently a historical expansion card standard, designed for attaching a video card to a computer's motherboard (and considered high-speed at launch, one of the last off-chip parallel ...
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Invalidate Internal Caches. [e] Modified data in the cache are not written back to memory, potentially causing data loss. [f] WBINVD: NFx 0F 09 [g] Write Back and Invalidate Cache. [e] Writes back all modified cache lines in the processor's internal cache to main memory and invalidates the internal caches.