Which device is responsible for printing physical copies of documents processed by a computer?

The device responsible for printing physical copies of documents processed by a computer is indeed a printer. Printers convert digital information into a tangible format, typically using ink or toner on paper. They receive data from the computer and output it as hard copies, which is essential for producing documents like reports, pictures, or any other digital files that require a physical form. This function is fundamental in both personal and professional settings where hard copies are needed for distribution, record-keeping, or presentations.

In contrast, a scanner digitizes physical documents by creating digital copies, a monitor displays digital content visually on a screen, and a projector enlarges and projects images onto a surface, often used for presentations. None of these devices are designed to produce printed material directly, highlighting the unique role of the printer in the context of document handling.