What is CPU?
A CPU, or central processing unit, is the main chip in a computer that carries out instructions and does the basic processing work. It’s often called the computer’s brain.
In more detail
A CPU, or central processing unit, is the part of a computer that processes instructions and performs calculations. It tells the computer what to do, from opening apps to saving files and loading web pages.
The CPU matters because it affects how fast a device can respond and handle tasks. A faster CPU can usually run more programs smoothly, though other parts like memory and storage also affect performance.
In everyday use, the CPU works behind the scenes whenever you type, stream video, browse the web, or use software. Most computers have the CPU built into the main circuit board or installed as a separate chip.
Examples
- Opening a web browser
- Running a video call
- Editing a document
- Playing a game
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