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An overview of operating systems (os), their definition, major components, and jobs. The os acts as the master control software, managing hardware and software resources, and making system usage easier for users. It performs three primary jobs: command interpreter, interface between hardware and software, and resource manager. The document also covers concepts like multi-tasking and virtual memory.
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18 October – Day 16 CSC 350 Review OS Job OS Modules function structure ---CSC350 notes--- I. Operating Systems Overview A. Systems Software What is software? define … note: great use for CS:AO! If you don’t recall a term, topic, etc – consult this text Three major components of systems s/w: booting software, translation software, OS Why is systems software different from application software or programming language? Looks “inward;” makes using the H/W easier for users and other S/W 3 Levels/layers of software built upon the hardware Application Package – solve user problem Programming Language – create application package
Systems S/W – manage system First two levels look “outward” to the user Last level looks “inward” to the H/W analogy: stewardship vs. evangelism B. Operating System (OS) Definition: Master control S/W Goal: Control and manage the H/W and other S/W of the system Operating system makes using the H/W easier for users & applications Three major jobs of an OS: