is a computer the same as a laptop
Personal computer A laptop computer (also called a notebook) is similar to a desktop, but is designed for portability. Usually, all of the hardware and interfaces needed to operate a laptop, such as the graphics card, audio devices or USB ports (previously parallel and serial ports), are built into a single unit. Laptops usually have "clamshell" design, in which the keyboard and computer components are on one panel and a flat display screen on a second panel, which is hinged to the first panel. The laptop is opened for use and closed for transport. Closing the laptop also protects the screen and keyboard during transportation. Laptops have both a power cable that can be plugged in and high-capacity batteries that can power the device, enhancing its portability. Once the battery charge is depleted, it will have to be recharged through a power outlet. In the interests of saving power, weight and space, laptop graphics cards are in many cases integrated into the CPU or chipset and use system RAM, resulting in reduced graphics performance when compared to an equivalent desktop machine. For this reason, desktop computers are usually preferred over laptops for gaming purposes.
Usage share of operating systems Since 2013, devices running Android have been selling more than Windows, iOS and macOS devices combined. Android has therefore become the most popular operating system on smartphones, while iOS is more common on tablets. Most desktop and laptop computers still use Microsoft Windows, while virtually all supercomputers use Linux and have done for over a decade. Among server computers, there is more diversity with Linux and Windows Server most popular, and many fewer mainframe OSs.