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PDA

                                       Personal  Digital Assistant (PDA)  is a  hand  held computer  that  has  a
                                       touchscreen and allows to organize our daily routine works like schedules,
                                       calendars and address book information. It also has a pen like stylus which
                                       allows us to give input. It can also accepts handwritten input directly from
                       PDA             the touchscreen.
                 Smart Watch

                 A smart watch is a computing device which you can wear on your wrist. It
                 provides the features of an older watch and some advanced features of
                 smartphone like connecting to the internet, using mobile apps, and making

                 phone calls, etc.
                                             Gaming Consoles                                           Smart Watch

                                             Gaming console, also called video game console is a computing device
                                             specially designed to play video games. We can connect the gaming
                                             console with television to play games on television. Some commonly
                                             used examples of the gaming consoles are Sony Playstation, Nintendo
                       Gaming Console
                                             GameCube, and Nintendo Wii.
                 A computer system is made up of a number of electronic devices which are connected together.
                 It is made up of both hardware and software. Hardware refers to the physical components that
                 make up a computer system. Let us read about software in detail.


                     SOFTWARE
                 Software is a set of instructions that makes the computer perform tasks. Software is another term
                 for a computer program. It controls the computer and makes it do useful work. Without software
                 a computer is useless.

                 Software can be classified into two broad categories: system software and application software.
                 System Software

                                                                                       System Software
                 It is the most important component to operate
                 a computer. The operating system is a type of
                 system software. System software can be classified
                                                                       Operating         Programming           Utility
                 into three categories, as shown:
                                                                        System             Software           Software
                 Operating System

                 An operating system is a system software that works as a mediator between user and computer
                 hardware. A computer cannot work without an operating system. Operating system helps the users
                 to give instructions to all the parts of the computer system and also make the users to understand
                 the results given by the computer. The three most
                 common operating  systems for  personal
                 computers are  Microsoft  Windows,  Mac OS
                 and Linux. Other known names are iMac, UNIX
                 and DOS.

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