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Desktop Computer

                  A desktop is primarily used in offices and at homes. It is designed
                  to fit comfortably on a desk.


                                          Laptop

                                          A laptop is a portable computer that you can keep on your lap. You can
                                          carry a laptop anywhere, therefore, you are not restricted to one place

                                          while working on a laptop.

                  Tablet

                  A  tablet  is  a kind  of microcomputer  that  offers new features  to  the
                  IT-savvy world like a touchscreen. It is available in a variety of sizes and
                  has an in-built virtual keyboard and a battery.


                              Smartphone
                              It is a mobile phone built on a mobile operating system. It provides additional features
                              to perform day-to-day tasks including sending emails and accessing the Internet.





                  Minicomputers

                  Minicomputers are more powerful than microcomputers. They are bigger
                  in size and faster in processing speed. They can support several users
                  working at the same time on the same machine which means they support
                  a multi-user environment. Some common examples are  HCL Magnum,
                  VAX7500, etc.


                                               Mainframe Computer

                                               A mainframe computer is a massive computer that occupies a huge
                                               space and often fills an entire room. It can store an enormous amount
                                               of information  and  is  designed  for multitasking with  several users
                                               working simultaneously. Mainframe computers usually have several
                                               terminals connected to them. They are manufactured for commercial
                  applications and other large-scale computing purposes.

                  Supercomputer

                  A  supercomputer  consists  of a  large number  of processors  and  also
                  occupies  a  huge  amount  of  space.  It  is  a  very  powerful machine  for
                  performing complex scientific calculations. Calculations that a personal

                  computer performs in three weeks can be performed by a supercomputer
                  within a minute.


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