Personal computer (PC) is a type of computer is very popular nowadays. Personal computers are affordable, easy to upgrade, easy to use, cleaning and maintenance. However, the personal computer takes up quite a lot of space and is the computer fixed. Appropriate personal computer for use in the work environment in offices and entertainment in the home. The laptop is a very popular nowadays because it has small size, lightweight, powerful configuration. The laptops can go anywhere, easy hygiene. Suitable for all environments, learning ... However, some types of laptops are now not able to upgrade hardware. Minicomputer has designed small, light, just the right configuration to use. The user can easily carry. Suitable for all environments, however, the need to monitor use. Mainframe is a computer that can handle large amounts of data, algorithms and powerful configuration. However, the machine takes up a lot of space, the difficulty in maintaining air and consume quite a lot of power. Mainframe was used in large companies and the Government. Supercomputer is a kind of super computers are configured and the most powerful processing speeds. Supercomputer capable of processing and calculations a billion calculations per second and continuous operation of 1 year. However, the supercomputer to spend so much (can be up to hundreds of square meters), consumes a lot of electricity and costs to build a Supercomputer is huge. Currently, the Supercomputer is used in companies, large corporations, government organizations, ...
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