In computer science and information technology, understanding how computers interact with the outside world is fundamental. When a computer system receives raw information, data, or signals from external sources—such as a user typing on a keyboard, a mouse click, sensor ...
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In the realm of **computer systems**, how do we categorize hardware devices that connect externally to the main computer unit? These **external devices**, often called **add-ons** or **accessories**, expand a computer’s capabilities. Common examples include **speakers**, **printers**, **external keyboards**, and ...