This document provides information about laptop computers, including notebooks, netbooks, and ultrabooks. Notebooks are smaller versions of laptops, while netbooks are low-end, inexpensive laptops primarily for internet browsing. Ultrabooks are high-end, lightweight laptops designed by Intel to have reduced bulk without compromising performance. Laptops differ from desktops in being smaller, lighter, and having integrated components and displays. Power management plays an important role, with operating systems and hardware providing battery-saving features. Various laptop components like keyboards, touchpads, and batteries are also discussed.