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Desktop Computer

                  A desktop is primarily used in offices and in 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 as

                                          you are 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
                              for 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,
                  VAX 7500, etc.


                                               Mainframe Computer

                                               A mainframe computer is a massive computer that occupies a
                                               huge amount of 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 multiple 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 in minutes.


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