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Tablet: A tablet is a small and portable digital computer that is
                    smaller than a laptop. Instead of a mouse, it has a touchscreen as

                    its input device. Like a laptop, it has a rechargeable battery. Tablets
                    usually have fewer features than laptops. They are often used by
                    professionals in different organisations.
                                                                                                        Tablet
                 Minicomputer

                 A minicomputer, also known as "mini", is a type of computer that is
                 bigger, more expensive, and more powerful than a microcomputer.
                 It can contain one or more microprocessors as its processing units.
                 This type of computer is mainly used for scientific and engineering
                 computations. A minicomputer has the capability to serve a number
                 of users simultaneously. It is also known as a small or midsize server
                 computer. Some common examples of  minicomputers are  PDP-11,
                 PDP-8, HP-3000, etc.
                 Clickipedia                                                                      Minicomputer



                  A server is also a computer that provides data and other services to other computers. It is
                  used in offices where many computers are connected to each other, allowing them to share
                  resources and communicate effectively.

                 Mainframe Computers

                 Mainframe computers are very large, fast, powerful,
                 and more expensive than minicomputers. They can
                 have multiple microprocessors as their processing
                 units. Some mainframe computers are so big that
                 they require as much space as a room.
                 Mainframe  computers are  generally  used in big
                 organisations where  a large amount of data  is
                 used, such as banks.  Examples of mainframe
                 computers are IBM zSeries, IBM 4381, ICL 39, etc.
                                                                                      Mainframe Computers

                                                                   Supercomputers


                                                                   Supercomputers are the largest and fastest of all
                                                                   types of computers. Even some supercomputers
                                                                   require as much space as a floor of a building.
                                                                   The cost of a supercomputer is very high. They
                                                                   can process a very large amount of data quickly.




                              Supercomputers


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