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a small, movable device that lets you control a range of things on a computer|used for putting information including letters, words and numbers into your computer|a display screen that provides visual output from a computer|central processing unit|a device that accepts text and graphic output from a computer and transfers the information to paper|an output hardware device that connects to a computer to generate sound|a device that scans an image (such as a photograph) or document (such as a page of text) especially for use or storage on a computer|the physical components that a computer system requires to function|instructions that tell a computer what to do