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                   El Capitan is the world’s most
                   powerful supercomputer,

                   launched in November 2024 at
                   Lawrence Livermore National
                   Laboratory (LLNL), California.






                                                                                  El Capitan






                        Restart


                         A computer is an electronic machine.

                         A computer works on the IPO (Input-Process-Output) cycle.


                         The data or instructions we give to the computer are called input.

                         Keyboard, mouse and scanner are input devices.

                         The conversion of data into meaningful information with the help of CPU

                        is known as processing. A CPU is made up of ALU, CU and MU.

                         The result of processing is called output.


                         Monitor, printer and speakers are the output devices.

                         Hard disk, pen drive and CD-ROM are the storage devices.

                         Computers are very useful to us because of their unique features.


                         Microcomputers, Minicomputers, Mainframe computers and
                        Supercomputers are the different types of computers.











                                                                                         The Computer System         13
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