Which of the following is NOT typically classified as an input device?

The monitor is the correct answer because it is primarily an output device. Its main function is to display visual information from the computer, allowing users to see the results of their actions and the data processed by the system. Unlike input devices, which allow users to provide data and control commands to a computer, a monitor does not facilitate input; rather, it presents output in the form of images, videos, text, and graphical interfaces.

Input devices like a keyboard, mouse, and scanner serve to capture user input in various forms—text, movement, and images, respectively. These devices enable interaction with the computer, playing a crucial role in the overall functionality of computing systems. Understanding the distinction between input and output devices is essential in the study of computer hardware and how users interact with technology.