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4.  Herman Hollerith                                         ..........................................................

                      5.  Gottfried Wilhelm Leibniz                                ..........................................................

                  B.  Write the year in which the following inventions took place.

                      1.  First mechanical calculator                                  ....................................................

                      2.  First electronic computer                                    ....................................................

                      3.  First mechanical computer                                    ....................................................


                      4.  First version of Microsoft Windows released                  ....................................................



                    Hands On                                                                               Creativity


                  Collect the pictures of early counting devices and paste them in your scrapbook.



                            SDG Activity



                     You notice many trees in your neighborhood are being cut

                     down. Do you think trees have some feelings or they are just
                     like machines? Discuss with your teacher.







                                                                                                       Subject Enrichment



                         Open Word 2016, type the name of different calculating devices and their
                        inventors and save the file as `Evolution of Computers’.


















                   Teacher's Corner

                  1.  Demonstrate the Abacus and its use to the students.
                  2.  Discuss the great breakthroughs which took place in each generation of computers.


                  18     iPRIME (Ver. 2.2)–V
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