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UNIT-3

                                                                 INFORMATION &

                                                               COMMUNICATION


                                                         TECHNOLOGY SKILLS-II









              ICT stands for Information and Communication Technology. It is a set of digital technology including computers
              hardware, software and networking for storing, managing and communicating the information.

              ICT skills are the ability to access software programs and manage the basic functions of a computer in an effective
              way. It helps you communicate with the people around you in your personal and professional life.
              ICT skills help us to communicate, run our business and stay connected with our family and friends. Hence, every
              person needs to acquire ICT skills and build them to stay updated with the latest software and applications (apps).


                       Computer System



              A computer is an electronic device designed to take input from the user, process it and then return the desired
              output.  A  computer  system  is a  combination  of  hardware  and  software  components  that  help  in doing  the
              required task.
              The physical components of the computer which you can touch and feel are called Hardware. Examples are
              mouse, keyboard, monitor, printer, etc.

              A set of instructions given to the computer to perform specific tasks is called Software. Computer is of no use
              without software. There are three types of software: system software, application software and utility software. Let
              us learn about them.
              Mobile devices, including smartphones and tablets, function as complete computer systems with both hardware
              and  software  components.  They  are  more  compact  and  portable  than  traditional  computers,  making them
              convenient to carry and use on the go.

              System Software


              System software is a software which is compulsory for the computer. Without a system software, computer is just
              a dummy without any use.

              It is always running in the background of your device and helping the user to smoothly use the computer system.
              For example: Operating systems like Windows, Mac OS, DOS, etc.

              Application Software


              Application software is a set of programs that helps the programmers to perform a specific task. It can be installed
              on a computer or mobile device, depending on the needs of the user. For example: Word deals with documents,
              Spreadsheets with calculation, Presentation software for creating and running presentations.



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