What Are the Differences among the Types, Sizes, and Functions in the Following Categories: Personal Computers (Desktop), Mobile Computers and Mobile Devices, Game Consoles, Servers, Mainframes, Supercomputers, and Embedded Computers? Industry experts typically classify computers in seven categories: personal computers (desktop), mobile computers and mobile devices, game consoles, servers, mainframes, supercomputers, and embedded computers. A personal computer is a computer that can perform all of its input, processing, output, and storage activities by itself. A mobile computer is a personal computer you can carry from place to place, and a mobile device is a computing device small enough to hold in your hand. A game console is a mobile computing device designed for single-player or multiplayer video games. A server controls access to the hardware, software, and other resources on a network and provides a centralized storage area for programs, data, and information. A mainframe is a large, expensive, powerful computer that can handle hundreds or thousands of connected users simultaneously and can store tremendous amounts of data, instructions, and information. A supercomputer is the fastest, most powerful, and most expensive computer and is used for applications requiring complex, sophisticated mathematical calculations. An embedded computer is a special-purpose computer that functions as a component in a larger product.