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In 1833, he invented a machine called the Analytical Engine,
                 the first-ever working model of a mechanical computer, a fully

                 program controlled machine. This is why Charles Babbage is
                 known as the ‘father of computers’.


                 LADY ADA LOVELACE’S PROGRAMS                                                      Analytical Engine



                 The instructions given to Babbage’s Analytical Engine were in the
                 form of 0s and 1s and the first person to introduce this concept
                 was Lady Ada Lovelace. Since she was the first to introduce the

                 concept of programming, she is known  as the  first  computer

                 programmer.
                                                                                                     Lady Ada Lovelace

                 GENERATIONS OF COMPUTERS

                            Generations                                           Features

                                                          Huge in size

                  First Generation      (1940s)           Very expensive
                                                          Made up of vacuum tubes

                                                          Made up of transistors

                                                          Magnetic tapes were used to store data.
                  Second Generation  (1950s)              Small in size and less expensive than
                                                         the first generation computer
                                                          Faster and reliable

                                                          These computers were made of ICs.
                                                          The use of the ICs reduced the size and
                  Third Generation      (1960s)
                                                         increased the speed of the computers.
                                                          They were more affordable and dependable.


                                                          Microprocessors were invented.
                                                          Small in size and could be placed on an
                  Fourth Generation  (1970s)             office table
                                                          Hard disk to store data
                                                          Introduction of GUI operating system


                                                          Use artificial intelligence
                                                          Improved size, cost, speed and
                  Fifth Generation      (1986s)          performance
                                                          New versions of GUI operating
                                                         systems are developed.


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