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    Charles Babbage is known as the ‘Father of computers’ because of his
                          invention of Analytical Engine.

                          Lady Ada Lovelace is known as the First Computer Programmer.
                          ENIAC, was the first electronic general-purpose digital computer, built in
                          1946 by John Mauchly and Presper Eckert.

                          Computers differ in their size, processing power, speed and cost.
                          A microcomputer is a type of computer that has one microprocessor as
                          its processing unit.

                          A minicomputer is type of computer that is bigger, more expensive and
                          more powerful than a microcomputer.

                          Mainframe computers are very large, fast, powerful and more expensive
                          than the minicomputers.
                          Supercomputers are the largest and fastest of all types of computers.

                          An embedded computer is a small computer system that is built inside
                          another device.

                          Mobile computers are small and lightweight computing devices that are
                          designed to be easily carried from one place to another.

                                                             Checkpoint

                     A.  Tick ( ) the correct option.
                         1.  Identify the first electronic general-purpose digital computer, built in 1946.

                            a.  UNIVAC                                      b.  Mark-I

                            c.  ENIAC                                       d.  Pascaline

                         2.  Spot the country where the Abacus was invented.

                            a.  Rome                                        b.  China

                            c.  India                                       d.  Greece

                         3.  Recognise the generation of computers that used vacuum tubes.

                            a.  First                                       b.  Second

                            c.  Third                                       d.  Fourth

                                                                                            Evolution of Computers       17

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