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Recap


                           Early people tied knots in rope and carved marks on clay to keep the records.

                           ABACUS was the first calculating aid invented 3000 years ago in China.
                           Blaise Pascal invented the calculating machine called the Pascaline.
                           Step Reckoner, the first calculator was invented by Gottfried Wilhelm Leibniz.
                           Analytical Engine, the first-ever working model of a mechanical computer was
                          invented by Charles Babbage, who is known as the ‘Father of Computers’.

                           Lady Ada Lovelace is the first computer programmer.
                           Mark-I was the first electro-mechanical computer.




                                                         Exercise



                  A.  Tick (3) the correct option.

                      1.  Early man carved marks on ............................. in order to keep the records.

                         a. clay                      b. computer                      c. calculator

                      2.  Which generation of computers have used magnetic tapes?

                         a. First                     b. Third                         c. Second

                      3.  Which of these devices was invented by Herman Hollerith?

                         a. UNIVAC                    b. Mark-I                        c. Tabulating Machine

                      4.  What was the name of the first electromechanical computer?

                         a. Mark-I                    b. ENIAC                         c. Difference Engine


                  B.  Fill in the blanks using the words given below.


                                        John Mauchly, Lady Ada Lovelace, IBM, Charles Babbage


                      1.  ............................. is known as the ‘Father of Computers’.

                      2.  ............................. is known as the first programmer in computer history.
                      3.  UNIVAC was invented by ............................. and Presper Eckert.

                      4.  ............................. introduced the PC-XT.

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

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

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


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