This document provides an introduction to common input, output, and storage devices used with computers. It defines input devices as hardware that allows data to enter a computer, such as keyboards, mice, touchscreens, and scanners. Output devices are used to present processed data to users, like monitors, printers, speakers and projectors. Primary memory temporarily stores active data and programs, while secondary memory, including hard drives, USB drives, CDs/DVDs, provides longer term storage. Mice and keyboards are described as key input devices, with details on their parts and proper use.