What is defined as anything connected to a computer externally that adds functionality?

A peripheral device refers to any external device that connects to a computer and enhances its functionality. These devices can take many forms, such as printers, mice, keyboards, monitors, scanners, and external hard drives. They serve various purposes, such as inputting data, providing output, or offering additional storage capacity.

In this context, peripheral devices are essential for expanding the abilities of a computer beyond its core functions. They facilitate user interaction with the system and allow for a more versatile computing experience. For instance, a printer allows you to produce physical copies of digital documents, while a webcam enables video conferencing.

The other options do not align with the definition of connecting externally to a computer. A software application is a program that runs on a computer, while a storage medium refers to devices that store data, which can be either internal or external. Internal components are parts located within the computer chassis, like the motherboard or CPU, which do not fit the description of being external devices. Thus, the definition of anything connected externally to a computer that adds functionality is accurately captured by the term peripheral device.