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Linking the Components
The Operating System
5 other sections not shown
access mechanism application program basic binary number bits buffer bus lines bytes channel characters command processor communication lines compiler components computer system data are stored data elements data flow diagram data structure database digit disk drive disk pack diskette electronic example executed external device functions hard disk hardware I/O control unit I/O operation input and output input or output input/output input/output control system instruction control unit interface board keyboard language linked load module logic unit machine cycle machine-level instructions magnetic main memory main processor mainframe memory management microcomputer MS/DOS multiprocessing multiprogramming number system object module operating system output devices peripheral device physical printer problem definition Processor management programmer's puter read/write head relative record number rotational delay secondary storage devices sector signal small computer source statement speed stored program systems analyst terminal time-shared tion track transmission control unit transmitted typical universal product code