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A computer is a machine that manipulates data according to a list of instructions

There are a lot of terms can be found over the internet related to computer. All type of computer have processor, Memory, keyboard, mouse and screen to display output. But their is a significant difference how people or organizations use computes for their usage. We can divide all type of computers to 10 categories.

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Personal Computer (PC) : A personal computer (PC) is a computer whose original sales price, size, and capabilities make it useful for individuals, and intended to be operated directly by an end user, with no intervening computer operator. People generally relate this term with Microsoft’s  Windows Operating system. Personal computers generally run on Windows, Mac or some version of Linux operating system.

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Desktop: Desktop computer is just another version of Personal Computer intended for regular use from a single use. A computer that can be fit on a desk can also be called as desktop.  Desktop computers comes in different form vertical tower cases to small form factor.

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Laptop:Laptop computer , Laptop or Notebook all are same. Laptop’s are generally small mobile computers run on a single main battery or from an external power supply that will served as to run the laptop as well as charge the battery. Laptop contains all the components of computer but all these are optimized for mobile users .

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Personal Digital Assistants(PDAs): A personal digital assistant (PDA) is a handheld computer, also known as small or palmtop computers. Newer PDAs also have both color screens and audio capabilities, enabling them to be used as mobile phones (smartphones), web browsers, or portable media players. Many PDAs can access the Internet, intranets or extranets via Wi-Fi, or Wireless Wide-Area Networks (WWANs). Many PDAs employ touch screen technology

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Workstation:A computer that has a more power resources like Processing Power, Memory and additional capabilities to perform special task refers to as workstation. Workstations are often optimized for displaying and manipulating complex data such as 3D mechanical design, engineering simulation results such as for computational fluid dynamics, animation and rendering of images, and mathematical plots.

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Wearable: Wearable computers are computers that are worn on the body. They have been applied to areas such as behavioral modeling, health monitoring systems, information technologies and media development. Government organizations, military, and health professionals have all incorporated wearable computers into their daily operations. Wearable computers are especially useful for applications that require computational support while the user’s hands, voice, eyes or attention are actively engaged with the physical environment