Peripheral
A peripheral device, or simply peripheral, is an auxiliary hardware device used to transfer information into and out of a computer.[1] The term peripheral device refers to all hardware components that are attached to a computer and are controlled by the computer system, but they are not the core components of the computer.
This article is about a type of hardware device. For other uses, see Periphery.
Several categories of peripheral devices may be identified, based on their relationship with the computer:
Many modern electronic devices, such as Internet-enabled digital watches, video game consoles, smartphones, and tablet computers, have interfaces for use as computer peripheral
devices.