Which of the following? It’s not peripheral? Printer, scanner, CPU, external cd

The CPU (Central Processing Unit) is not considered a peripheral device. Peripherals are external devices that connect to the computer and provide additional functionality. The printer, scanner, and external CD are all examples of peripheral devices.

The CPU is not considered a peripheral device. It is the central processing unit of the computer and is responsible for executing instructions and performing calculations.

On the other hand, a printer, scanner, and external CD drive are considered peripheral devices. They are external devices that can be connected to the computer to perform specific functions. A printer is used to produce hard copies of documents, a scanner is used to convert physical documents into digital format, and an external CD drive is used to read or write CDs or DVDs.

To determine which of the given options is not considered a peripheral, let's start by understanding what a peripheral is.

A peripheral is a device or equipment that is external to the computer's central processing unit (CPU) and is connected to it for input, output, or storage purposes. Peripherals can include devices such as printers, scanners, external CD drives, and more.

Now, we need to identify the option that does not fit this definition. Let's analyze each option:

- Printer: A printer is a peripheral device as it is an external device connected to the computer for outputting printed documents or images.

- Scanner: A scanner is also a peripheral device since it is connected to the computer for input, allowing you to digitize physical documents or images.

- CPU (Central Processing Unit): The CPU is the main component and the brain of the computer. It is not a peripheral device because it is an integral part of the computer itself, rather than an external device connected to it.

- External CD drive: An external CD drive is also a peripheral device. It is an external device connected to the computer for reading CDs or DVDs.

From the given options, the one that does not qualify as a peripheral is the CPU.