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After studying this chapter, you should be able to: Summarize, at a top level, the key functions of an operating system (OS); discuss the evolution of operating systems for early simple batch systems to modern complex systems; discuss the key design areas that have been instrumental in the development of modern operating systems;. | Operating Systems: Internals and Design Principles Chapter 2 Operating System Overview Seventh Edition By William Stallings Operating Systems: Internals and Design Principles Operating systems are those programs that interface the machine with the applications programs. The main function of these systems is to dynamically allocate the shared system resources to the executing programs. As such, research in this area is clearly concerned with the management and scheduling of memory, processes, and other devices. But the interface with adjacent levels continues to shift with time. Functions that were originally part of the operating system have migrated to the hardware. On the other side, programmed functions extraneous to the problems being solved by the application programs are included in the operating system. —WHAT CAN BE AUTOMATED?: THE COMPUTER SCIENCE AND ENGINEERING RESEARCH STUDY, MIT Press, 1980 Operating System A program that controls the execution of application programs An interface between applications and hardware Program development Program execution Access I/O devices Controlled access to files System access Error detection and .
