Which of the following devices would typically have an output function?

A printer is a device designed specifically for output functions, as it takes digital data from a computer and produces a tangible printed document. This process involves converting electronic information into a physical format, such as paper, making it an essential component for users needing hard copies of documents, images, or graphics.

In contrast, a scanner primarily serves as an input device, capturing physical documents or images and converting them into digital formats for storage or editing. While a keyboard is used for inputting data and commands into a computer, it does not have output capabilities. A webcam, too, functions as an input device, capturing video and images to transmit them to a computer or over the internet. Thus, the printer stands out as the only option in this list that inherently possesses output functionality.