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Virtualization
is the practice of sharing or pooling computing resources, such as servers and storage devices.
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Server virtualization
uses software to divide a physical server logically into many virtual servers.
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Server Farm
is a network of several servers together in a single location.
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Mainframe
Is a large, expensive, powerful server that can handle hundreds or thousands of connected users simultaneously.
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SuperComputer
is the fastest, most powerful computer- and the most expensive.
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Terminal
is a computer, usually with limited processing power, that enables users to send data to and/or receive information from a server, or host computer.
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Thin client
is a terminal that looks like a desktop but has limited capabilities and components.
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Special-purpose Terminals
perform specific tasks and contain features uniquely designed for use in a particular industry. Three widely used special-purpose terminals are point-of-sale terminals, ATM's, and self-service kiosks.
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POS terminal
records perchases, process credit or debit cards, and updates inventory.
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Bar Code Reader
is an input device that uses laser beams to read bar codes on products.
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