A laptop is a portable personal computer that integrates all the components of a desktop computer into a single unit. It typically features a screen, keyboard, and trackpad, allowing users to work or play on the go. Laptops are powered by batteries, making them convenient for travel and outdoor use. Modern laptops come in various sizes and specifications, catering to different needs such as gaming, business, or casual use. They often include features like high-resolution displays, powerful processors, and ample storage. Popular brands include Dell, HP, and Apple, each offering unique models to suit diverse preferences.