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    Reboot

                         Guess my name:

                         1.  You can keep me on your lap

                         2.  I am an ancient tool for calculation

                         3.  You can keep me on a desk

                         4.  I am the first desktop computer

                              At a Glance

                        ●   Early people tied knots in a rope and carved marks on clay to keep the records.
                        ●   ABACUS was the first calculating device invented 3000 years ago in China.
                        ●  Charles Babbage is known as the father of computer.

                        ●   Lady Ada Lovelace was the first computer programmer.

                        ●   Desktop can be seen at various places such as homes, schools and shops.
                        ●   A laptop is smaller than a desktop computer.
                        ●   A tablet is a notebook-shaped mobile computer.

                        ●   A smartphone is a mobile phone that can be used as a computer also.

                     Tick ( ) the correct option.

                        1.  Which of these was not used by the early men for counting?

                            a.                                               b.

                            c.                                               d.

                                                                                    Evolution of Computers      15

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