Which of the following is NOT an example of an input device?

A printer is not an input device; it is an output device. Input devices are used to provide data and control signals to a computer, allowing users to interact with and give commands to the system. For instance, a mouse allows users to navigate and interact with graphical elements on a screen, a keyboard enables text input and command execution, and voice input systems capture spoken commands or data.

In contrast, a printer takes processed data from a computer and produces a hard copy, making it essential for output rather than input. This distinction helps to categorize devices based on their primary function in the computing process.