Meaning of peripheral, external or internal devices enhancing a computer's functionality. Explore examples, connection types, the difference from accessories. Peripheral Devices: The Input / output organization of computer depends upon the size of computer and the peripherals connected to it. The I/O Subsystem of the computer, provides an efficient mode of communication between the central system and the outside environment A peripheral device, or simply peripheral, is an auxiliary hardware device that a computer uses to transfer information externally. [1] A peripheral is a hardware component that is accessible to and controlled by a computer but is not a core component of the computer. In the world of computers, peripheral devices are like unsung heroes that make computers do more things. They include things like keyboards and external hard drives, which help you interact with computers, process data, and store information. This guide will explore what is peripheral device, how they are classified, what types there are, what they do, and also why they matter in modern computing. So, let's dive in and discover how these devices make our digital lives easier.