UCSC CMPE 003 - Chapter 3 Operating Systems - Software in the Background (57 pages)

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Chapter 3 Operating Systems - Software in the Background



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Chapter 3 Operating Systems - Software in the Background

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Lecture Notes


Pages:
57
School:
University of California, Santa Cruz
Course:
Cmpe 003 - Personal Computer Concepts

Unformatted text preview:

Computers Tools for an Information Age Chapter 3 Operating Systems Software in the Background Objectives of Chapter 3 Describe the functions of an Operating System Explain the basics of a personal computer operating system Describe the advantages of a graphical operating system Differentiate among different operating systems Explain the need for network operating systems Describe the methods of resource allocation on large computers Be able to describe the differences among multiprocessing multiprogramming and timesharing Explain the principles of memory management List several functions typically performed by utility programs Systems Software Definition All programs related to coordinating computer operations Components Operating System Utility programs Program language translators Operating Systems Hidden Software Serves as intermediary between hardware and applications software User interested in application software to make the PC useful Application software is platform specific User must be aware of the type of OS User should be aware of the functions of OS Operating System The set of programs that lies between applications software and the hardware and Manages computer s resources CPU memory peripheral devices Establishes a user interface Determines how user interacts with operating system Provides and executes services for applications software Kernel Manages the operating system Loaded from hard drive into memory when computer is booted Booting refers to starting the computer Loads other operating system programs from disk storage as needed Other programs referred to as nonresident User Interface Facilitates communication between the user and the operating system Two forms Command line Text based Key commands Examples MS DOS Unix Graphical user interface GUI pronounced gooey Visual images Menus Examples X Windows UNIX MS Windows Mac OS Platform Definition Computer hardware and operating system software that dictate what other software can run Wintel Windows



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