The document summarizes several common computer components: 1) Computer monitors have decreased in size over time from desk-sized to about an inch thick now and are used to display what is happening inside the computer. 2) Mice allow users to control the computer cursor and interface with two buttons and sometimes a scroll wheel. 3) Speakers enable computers to play sound by playing or storing music. 4) Webcams are small built-in or attachable cameras used for video chatting between computers with integrated speakers. 5) Flash drives are small portable storage devices for pictures, documents, and music that make computers nearly portable.