# data[].attributes.body
- Popular in the 1960s by Seymore Cray

-The most complex computers.

-Used in solving complex numerical problems, make forecasts and analyse scientific or engineering problems.

-Used by people who need to process complex and large amounts of data

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- Mainframe computers are large and expensive.

-Powerful processors and every large memories.

- Resilient and capable of operating for over 10 years without failing.

- Hundreds of people can work on a mainframe computer at the same time.

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-Minicomputers are smaller but cheaper than mainframes computers.
-Can process large amount of data.

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-They are the most common computers.
-Used by businesses, at schools and at homes.
-Only one person can use them at a time
-Also called desktop computers or personal computers.

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- Laptop computers are smaller but costlier than desktop computers.
- They are also called notebook

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- Tablets are used to organize information , play games , read e-books

- Tablets were maded at 2001

- Mobile phones were maded at 1973

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-An embedded computer is a microprocessor

-Filled into a device to control  it´s operation.

-Electronic systems that perform a very specific function thanks to microcontrollers .