Input/Output Device (I/O Device)

Definition - What does Input/Output Device (I/O Device) mean?

An input/output (I/O) device is a hardware device that has the ability to accept inputted, outputted or other processed data. It also can acquire respective media data as input sent to a computer or send computer data to storage media as storage output.

An I/O device is also known as an IO device.

Techopedia explains Input/Output Device (I/O Device)

Input devices provide input to a computer, while output devices provide a way for a computer to output data for communication with users or other computers. An I/O device is a device with both functionalities.

Because I/O device data is bi-directional, such devices are usually categorized under storage or communications. Examples of I/O storage devices are CD/DVD-ROM drives, USB flash drives and hard disk drives. Examples of communication I/O devices are network adapters, Bluetooth adapters/dongles and modems.
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