What is a Laptop ?

 A laptop is a personal computer for mobile use. A laptop integrates most of the typical components of a desktop computer, including a display, a keyboard, a pointing device (a touchpad, also known as a trackpad, and/or a pointing stick) and speakers into a single unit. A laptop is powered by mains electricity via an AC adapter, and can be used away from an outlet using a rechargeable battery. A laptop battery in new condition typically stores enough energy to run the laptop for three to five hours, depending on the computer usage, configuration and power management settings. When the laptop is plugged into the mains, the battery charges, whether or not the computer is running. Yet as it ages the battery's energy storage will slowly disipate to lasting a few minutes.A small small enough that it can sit on your lap. Nowadays, a computer laptop is more frequently called a notebook computer, though technically laptops are somewhat larger in size than notebooks in both thickness and weight.