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What is a CPU?

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A CPU is the brain inside a computer, tablet, smart TV, or even your smartphone. It completes calculations to execute instructions that allow you to call friends, surf the internet, or write an email. It does this with millions to billions of transistors that prevent or allow current to flow through, conveying ones and zeroes that translate into performing an action.

The core components of a CPU are its control unit, arithmetic logic unit, and memory units. All of these rely on a clock that produces regular electrical pulses to synchronize all of the hardware and software in the device. The speed of the clock, measured in hertz (Hz), dictates how fast a CPU can process an instruction and complete an operation.

Once an instruction is fetched, it goes to the decode unit, which converts the hard-coded "instruction set" into electrical signals that tell various parts of the CPU how to perform an action, such as adding two numbers together, logical functions like Boolean logic, storing data from RAM back to the CPU, outputting information to a device, or comparing numbers. Then, the CPU executes the instruction and moves on to the next one in a logical sequence.

Unlike GPUs, which are ideal for high-performance tasks like displaying 3D graphics, CPUs are good at handling a broad range of general computing tasks, from input and output to memory processing. As such, they continue to be the key driver of system performance, although games and CAD/video editing can benefit from faster processors with more cores.Cpu’s

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