Input output

This document provides an overview of various input and output devices. It describes different types of keyboards, pointing devices, touch screens, pen input, and motion, voice, and video input. It also covers scanners and reading devices. For output, it discusses displays, various printer types including inkjet, laser, photo, and 3D printers, and their characteristics. The document is from a chapter that aims to differentiate and describe many common input and output tools, technologies, and devices used with computers.