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N4Less11
N4Less11

... • Under an OS such as Windows, you see a familiar interface no matter what programs you use. • In a GUI, each program opens and runs in a separate window—a frame that presents the program and its ...
KernelSec: An Authorization Model in the Operating System Kernel
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... the authorization not only on the user, but also on the executable (or the program) and the history of accesses. Keeping track of the history allows KernelSec to change the privileges available (dynamically) at run-time. Associated with every process is a domain which describes its privileges. In Ke ...
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B - Chulmleigh ICT Department

... 4 This is the part of the operating system that allows the user and the computer to communicate with each other. 5 Pieces of software that allow an operating system to communicate with peripheral devices. 6 A series of the most widely used desktop operating systems, made by Microsoft. 8 This open so ...
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... presented next to each other rather than overlapping. Windows version 2.0, introduced in 1988 in  collaboration with the IBM Corporation, was designed to resemble IBM’s OS/2 Presentation Manager,  another GUI operating system. Windows version 2.0 included the overlapping window feature. The more  po ...
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Application of Operating System Concepts to Coordination in

... government, business, and residential environments have not provided an integrated infrastructure that easily supports the development of applications that make use of network-embedded sensors and controllable devices. This situation is analogous to a traditional computer in which there is no operat ...
Windows, in computer science, personal computer operating system
Windows, in computer science, personal computer operating system

... presented next to each other rather than overlapping. Windows version 2.0, introduced in 1988 in collaboration with the IBM Corporation, was designed to resemble IBM’s OS/2 Presentation Manager, another GUI operating system. Windows version 2.0 included the overlapping window feature. The more power ...
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Lecture_1 - bridges to computing

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Slides. - Department of Computer Science and Information Systems
Slides. - Department of Computer Science and Information Systems

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Lecture 1: Operating System Services What is an Operating System?

... The operating system must respond to events, which will occur in an unpredictable order but it must preserve the consistency of the whole system. If we have two processes, say P1 and P2, running concurrently, and P1 produces the events E1, E2, E3 and P2 produces the events E3, E4, E5. These six even ...
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... users as necessary for their tasks. Since there may be many, possibly conflicting requests for resources, the operating system must decide which requests are allocated resources to operate the computer system efficiently and fairly." ...
operating systems - Ronny`s Web Site
operating systems - Ronny`s Web Site

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... involved switching system resources back and forth between the two running processes. The system would execute tasks for one, freeze that program for a few seconds, and then execute tasks for the other program. While this approach did create a short time lag for the operator, this lag was usually no ...
Chapter 8: Operating Systems and Utility Programs
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... • The part of the hard disk used for virtual memory • Paging is the technique of swapping items between memory and storage – It’s a time consuming process ...
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... Modern operating systems  x86 platform – Linux – Windows  Mac platform – Mac OS  Sun Solaris & Unix (Sun workstations)  IBM AIX (mainframes)  Embedded systems (special-purpose OS) – Palm, PocketPC, etc – Xbox, etc ...
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Operating Systems

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J0282 / Pengantar Teknologi Informasi

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Operating Systems - Metcalfe County Schools
Operating Systems - Metcalfe County Schools

... over an operating system. The poster should help the average computer user better understand the features, cost and the system requirements of the OS. Pictures and logo’s that relate to the selected Operating System should be included within the poster. Use color within the poster to make items stan ...
Software nature & capabilities - Computing and ICT in a Nutshell
Software nature & capabilities - Computing and ICT in a Nutshell

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Operating systems

... operator as intermediary is that the users have no interaction with their jobs once they are submitted to the operator.  New operating systems were developed that allowed a program being executed to carry on a dialogue with the user through remote terminals (interactive processing) – in which the u ...
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Mobile operating system

A mobile operating system (or mobile OS) is an operating system for smartphones, tablets, PDAs, or other mobile devices. While computers such as the typical laptop are mobile, the operating systems usually used on them are not considered mobile ones as they were originally designed for bigger stationary desktop computers that historically did not have or need specific ""mobile"" features. This distinction is getting blurred in some newer operating systems that are hybrids made for both uses.Mobile operating systems combine features of a personal computer operating system with other features useful for mobile or handheld use; usually including, and most of the following considered essential in modern mobile systems; a touchscreen, cellular, Bluetooth, Wi-Fi, GPS mobile navigation, camera, video camera, speech recognition, voice recorder, music player, near field communication and infrared blaster.Mobile devices with mobile communications capabilities (e.g. smartphones) contain two mobile operating systems – the main user-facing software platform is supplemented by a second low-level proprietary real-time operating system which operates the radio and other hardware. Research has shown that these low-level systems may contain a range of security vulnerabilities permitting malicious base stations to gain high levels of control over the mobile device.
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