introduction to operating system

Information about introduction to operating system

Published on November 23, 2010

Author: haydzz

Source: authorstream.com

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Introduction to Operating System : Introduction to Operating System By Haydee Limson, MIS Instructor Objectives of Operating Systems : Objectives of Operating Systems To hide details of hardware by creating abstraction An abstraction is software that hides lower level details and provides a set of higher-level functions. An operating system transforms the physical world of devices, instructions, memory, and time into virtual world that is the result of abstractions built by the operating system. Objectives of Operating Systems : Objectives of Operating Systems To allocate resources to processes (Manage resources)An operating system controls how processes (the active agents) may access resources (passive entities). Objectives of Operating Systems : Objectives of Operating Systems Provide a pleasant and effective user interface The user interacts with the operating systems through the user interface and usually interested in the “look and feel” of the operating system. Examples of Operating Systems : Examples of Operating Systems Windows Vista : Windows Vista Windows Vista is an operating system released in several variations developed by Microsoft for use on personal computers, including home and business desktops, laptops, tablet PCs, and media center PCs. Prior to its announcement on July 22, 2005, Windows Vista was known by its codename "Longhorn.“ Development was completed on November 8, 2006; over the following three months it was released in stages to computer hardware and software manufacturers, business customers, and retail channels. On January 30, 2007, it was released worldwide,and was made available for purchase and download from Microsoft's website Windows 7 : Windows 7 Windows 7 is the latest release of Microsoft Windows, a series of operating systems produced by Microsoft for use on personal computers, including home and business desktops, laptops, netbooks, tablet PCs, and media center PCs. Windows 7 was released to manufacturing on July 22, 2009,[5] and reached general retail availability on October 22, 2009, less than three years after the release of its predecessor, Windows Vista. Windows 7's server counterpart, Windows Server 2008 R2, was released at the same time. There are lot’s of OS created : There are lot’s of OS created Google Chrome OS

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