A laptop, or simply a laptop a small mobile computer components that are similar to their desktop counterparts, but has been optimized for mobile use and efficient power consumption. Laptops usually have a built-in keyboard and typically employ liquid crystal displays (LCD). There are different categories of laptops, such as Ultra-Mobile PCs (UMPC), Ultra-portables, Thin-and-Lights and Mainstream.
Laptops are also known as Computer-Notebookor just laptops. A laptop usually runs on a single main battery and is able to the same tasks as a desktop computer can. For a given price range, laptops are usually less powerful than a desktop computer, as they prioritize their compactness and energy efficiency on an absolute performance. Thanks to advances in dual-core processors and perpendicular recording laptops are giving tough competition to PCs.















