HISTORY OF OPERATIMG SYSTEMS Operating systems (OS) provide a set of functions needed and used by most application programs on a computer‚ and the linkages needed to control and synchronize computer hardware. On the first computers‚ with no operating system‚ every program needed the full hardware specification to run correctly and perform standard tasks‚ and its own drivers for peripheral devices like printers and punched paper card readers. The growing complexity of hardware and application programs
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changing an operating system......... An operating system is the program that manages all the application programs in a computer system. This also includes managing the input and output devices‚ and assigning system resources. Operating systems evolved as the solution to the problems that were evident in early computer systems‚ and coincide with the changing computer systems. Three cycles are clear in the evolution of computers‚ the mainframe computers‚ minicomputers and microcomputers‚ and each
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EVOLUTION OF THE OPERATING SYSTEM Operating systems as they are known today trace their lineage to the first distinctions between hardware and software. The first digital computers of the 1940s had no concept of abstraction; their operators inputted machine code directly to the machines they were working on. As computers evolved in the 1950s and 1960s however‚ the distinction between hardware such as the CPU and memory (or Core as it was called then) and the software that was written on top of it
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2.1 TYPES OF OPERATING SYSTEM A. Batch Operating System- Batch processing is the most primitive type of operating system. Batch processing generally requires the program‚ data‚ & appropriate system commands to be submitted together in the form of a job. Batch operating systems usually allow little or no interaction between users & executing programs. Examples of such programs include payroll‚ forecasting‚ statistical analysis‚ & large scientific number-crunching programs. Serial processing combined
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Internet Operating Systems Andrew S Minette POS/355 University of Phoenix Internet operating systems‚ or Web operating systems‚ are not operating systems per say. There are more of user interfaces. An operating system is dependent on system hardware and uses hard disk space on a user computer to install and store applications. Web operating systems‚ however‚ depend on traditional operating systems to run an instance. According to Jonathan Strickland or How Stuff Works‚ while there may not
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Library of application software Security 1. Multitasking Capability Many computers do just one thing at a time‚ as anyone who uses a PC or laptop can attest. Try logging onto your company’s network while opening your browser while opening a word processing program. Chances are the processor will freeze for a few seconds while it sorts out the multiple instructions. UNIX‚ on the other hand‚ lets a computer do several things at once‚ such as printing out one file while the user edits another
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Overview of Mobile Operating Systems Today Samuel Echevarria Lee University February 29‚ 2012 Abstract The paper discusses the importance of mobile operating systems in today’s world‚ while also giving a brief overview of the important mobile OS’s that are popular in the US. Advantages and disadvantages are analyzed within each mobile OS and will give an insight as to which mobile OS caters to a user’s or business need. This is done by evaluating the smartphone market (market share‚ hardware sales
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Operating system virtualization is a method of altering a standard operating system so it may handle multiple users all at the same time. These individual users would not have any interaction with one another. Their information would also remain separate‚ even though they are using the same system. While this technology has several uses‚ the most common uses are in hosting situations and server consoladation. With operating system virtualazation‚ a single system is set up to operate like several
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TYPES OF OPERATING SYSTEM Real-time Operating System: It is a multitasking operating system that aims at executing real-time applications. Real-time operating systems often use specialized scheduling algorithms so that they can achieve a deterministic nature of behavior. The main object of real-time operating systems is their quick and predictable response to events. They either have an event-driven or a time-sharing design. An event-driven system switches between tasks based of their priorities
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Networking in Operating Systems Week 6 Check Point Networking in an operating system can be a daunting task is the User doesn’t know what they are doing. There are many advantages to networking. Sharing of data and resources can help to make a company run smoothly and more efficiently. How this happens is the connection of a workstation to a network. While a network is a group of computers attached to a wire‚ it has become much more complicated. The wire or connection is there for
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