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Computer System
                                                                                                    I/O Devices
                             Memory

                              Operating                    I/O Controller                                         Printers,
                               System                                                                             keyboards,
                              Software                                                                            digital camera,
                                                           I/O Controller                                         etc.





                              Programs
                              and Data





                                                           I/O Controller





                              Processor                      Processor


                                                                                                     Storage
                                                                                                       OS
                                                                                                   Programs


                                                                                                      Data







                                   Figure 2.2   The Operating System as Resource Manager
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