Which device is characterized as a Human Interface Device (HID)?

A Human Interface Device (HID) is defined as any device that interacts directly with humans to provide input or output. The keyboard serves as a primary example of this classification, as it allows users to input data into a computer or other device through key presses. HIDs are designed to be easily recognized by operating systems without requiring additional drivers, making keyboards exceptionally user-friendly for interacting with computers.

In contrast, while printers, routers, and scanners are important peripherals, they do not fall into the HID category. Printers produce output for human consumption but do not facilitate direct interaction for input. Routers function in network communication and connectivity, handling data traffic without direct human input. Scanners convert physical documents into digital format but primarily serve as output devices rather than interfaces for user interaction. This distinction emphasizes the keyboard's role as a device that directly mediates the interaction between users and computer systems, highlighting its status as an HID.