A laptop is a portable computer that combines the components of a desktop computer into a compact design. It typically includes 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. Laptops come in various sizes and specifications, catering to different needs. Some are designed for basic tasks like browsing the internet and word processing, while others are built for more demanding activities such as gaming or graphic design. Popular brands include Dell, HP, and Apple.