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Different Types of Computers Personal Computer (PC) Personal Computer (PC) A PC is a small computer that fits on a desk and is used by one person. It is based on the microprocessor technology that enables manufactures to put an entire computerprocessing unit (CPU) on one chip, which acts as the brain of the computer, telling each part what action to perform. A desktop computer running Windows is often referred to as a PC, but Apple computers are also technically PCs. Laptop / Notebook Computer Laptop / Notebook Computer A laptop is a portable computer that integrates a display, keyboard, processor, memory, hard drive, and pointing device all in a batteryoperated package. In terms of computing power, modern laptops are nearly equivalent to PCs. While they can have the same speed and memory as a PC, all that power in a small package makes them more expensive. Smartphone / Tablet Smartphone / Tablet Smartphones and tablets are hand-held computing devices that run an operating system and series of applications. Generally controlled by a touch screen input, the modern generation is capable of many of the same tasks as PCs and laptops. The biggest disadvantage is the inability to perform certain tasks without connecting external peripherals. Workstation Workstation A workstation is more powerful and faster than most personal computers. It is typically used for graphics, scientific computing, computer assisted design (CAD), and other applications requiring high performance and memory. Like PCs, most workstations are used be one person. Server Server A server is a computer that has been optimized to provide services to other computers over a network. It can carry out more than one program or instruction at the same time, allowing it to support hundreds of users at once. People login to the server by typing in a username and password and then access the applications and documents while working from their PC. Supercomputer Supercomputer A supercomputer is the fastest type of computer. They are very expensive and are employed for specialized applications that require immense amounts of mathematical calculations. Examples of tasks include weather forecasting, fluid dynamic calculations, nuclear energy research, and petroleum exploration.