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Fundamentals of                                                      1


                                      Computer



                                                                                                    Unit






                     Goal Glimpse

                         What is a Computer?                             Block Diagram of Computer
                         Components of the Computer                      How Does a Computer Work?

                         Computer Memory                                 Measuring Unit for Memory
                         What Does Starting a Computer Mean?             Disk Space Management
                         Managing Recycle Bin                            Disk Defragmentation
                         Shutting Down of a Computer                     Searching for Files or Folders




                 Computers are used in almost every aspect of life today. In education, they power online learning
                 and research, while in healthcare, they assist with diagnostics, patient records, and surgeries.
                 They  control transportation systems  like GPS and  autopilots  and  are  vital in communication
                 through emails, social media, and video calls. In this unit, you will learn how computers work and
                 how to use them to do some fun and useful things.

                    WHAT IS A COMPUTER?

                 A  computer is  an electronic device that can process data,  perform
                 calculations, store information, and execute tasks based on instructions
                 provided by users. It can be programmed to carry out various functions,
                 making it a versatile tool for a wide range of applications. We can simply
                 say that computer:
                    accepts the data as input
                    processes the data

                    generates the information as output
                    store the information in storage devices
                 Why Do We Need a Computer?

                 Computers have become an important part of our lives in many ways. We need computers:
                    For Learning: To watch educational videos, attend online classes, and search for information.

                    In Healthcare: To help doctors keep patient records and use special machines for treatment.





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