A peripheral is a device that connects to a computer and enhances its functionality but is not essential for the basic operation of the computer. Among the options provided, the following are considered peripherals:
- Sound card: While it can be integral to some systems for audio functions, it’s considered a peripheral since many computers have built-in sound capabilities.
- Keyboard: This is a classic example of a peripheral, as it is an external device used for input.
- Graphics card: This is often considered a core component as it handles graphical output, but it can also be seen as a peripheral in some contexts.
The CPU (Central Processing Unit) is not a peripheral; it is a fundamental component of the computer itself.
Thus, the best examples of peripherals in this context are sound card, keyboard, and graphics card. If you are to select only one, then the keyboard is the clearest example of a peripheral device.
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