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2.  What are Applications or apps?
                    Ans.  A smartphone performs so many functions with the help of software applications (Apps). On the screen of a
                        Smartphone or Tablet, there are icons. If you touch these, they directly open and start programs or functions
                        required for watching movies, playing games, using the camera, etc.
                        Apps perform certain computer operations to work out different functions. There are certain apps that are
                        already in tabs or mobiles, commonly called ‘default apps’. Many other apps can be purchased and downloaded
                        free of cost from online play  stores, like Google Play Store for Android and Apple App Store for Apple.
                      3.  Identify the following Apps on mobiles:
                        a.                        b.                      c.                      d.











                    Ans.  a. Gallery        b. Google Maps          c. Google Chrome         d. Google Play Store

                      4.  Explain any five popular applications of the Internet.
                    Ans.    Search Engine: It can be used to search anything on the web. The most popular search engines are Google
                          and Yahoo.

                          Hobbies: Those who have certain hobbies can try to improve on them by reading about many aspects of
                          their hobbies.
                          Job Search: Nowadays, many people search for jobs online as it is quicker to approach and there is a large
                          variety of job vacancies present. People can publish their resumes online for prospective jobs. Some of the
                          websites providing this service are naukri.com, monster.com, summerjob.com, recuritmentindia.com, etc.
                          Shopping: Shopping has become easier with the advent of the Internet. It has also facilitated an introduction
                          of a new market concept consisting of virtual shops. Using internet services, customers can submit specific
                          product queries and request specific sales quotes. For example amazon.com is a WWW-based on the internet
                          where information on all types of products can be found and various products can be ordered online.

                          Travel: One  can  use the  Internet  to gather  information about  various  tourist places. It can  be used for
                          booking holiday tours, hotels, trains, buses,  ights and cabs. Some of the websites providing this service are
                          goibibo.com, makemytrip.com, olacabs.com, etc.

                      5.  Name the functional elements of a CPU.
                    Ans.  The functional elements of a CPU can be divided into three parts:
                          Arithmetic Logic Unit (ALU)
                          Control Unit CU)

                          Memory Unit (MU)

                      6.  Write a short note on Motherboard.
                    Ans.  Motherboard is the main circuit board of a computer that lies inside the CPU, to which all the hardware devices
                        are connected. It is in the form of a large multilayered printed circuit which contains connectors (sockets) for
                        attaching additional devices.




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