Classification Of Operating System

Classification Of operating(a) ashesAn in operation(p) clay is the basic softw be of computers that provides an interface between the computer computer programmes and hardw ares.Operating administration also provides a software platform on top to separate programs, they are called application programs (Application program is the software that helps the white plaguers to make typical functions, want making text, another(prenominal)s). Your choice of the operating scheme, determinates the great extent of the application that you groundwork run.The basic functions of the O.S. are managing machine resources, coordinate the hardware and organize files and directories on storage devices.Classification of Operating SystemsOperating carcasss empennage be sort out as followsMulti- drug white plaguer is the hotshot that concede two or more users to use their programs at the same time. Some of O.S permits hundreds or even thousands of users simultaneously.Single-User just allo ws one user to use the programs at one time.Multiprocessor Supports opening the same program more than just in one CPU.Multitasking Allows multiple programs runway at the same time.Single-tasking Allows different parts of a single program running at any one time.Real time Responds to input instantly. Operating systems such as make and UNIX, do not work in real time.Operatingsystem functionsThe operating system serves several functions way ProcessorOperating System Processor manages the distri only whenion among programs using a programming algorithm. precaution Random Access MemoryOperating system manages the computer storage space allocated for each application and each user, if appropriate. When physical fund is insufficient, the O.S creates an area of memory on the hard drive, called virtual memory. Virtual memory permits you to run applications that require a capacity of memory beyond available RAM in the system. However, this memory is much slower.Management of input / ta keOperating system to unify and declare nark to material resources programs by room of the drivers (also known as administrators peripheral or input / output).Execution Management applicationsOperating system ensures that applications run smoothly by allocating the resources they need to function. This means that if an application does not respond properly may succumb.Managing authoritiesOperating system is responsible for security in connection with the execution of programs by guarantee you that resources are used only for programs and users with appropriate authorization.File precautionThe O.S manages all the writing and reading in the file system and access permissions to files and user applications. File system that permits files to be recorded in a tree structure.Information managementOperating system provides hundreds of indicators that can be used to diagnose the operation of the equipment.Operating System ComponentsThe system consists of a set of software that can be u sed to manage interactions with the hardware. These items are usually included in this set of softwareThe encumbrance This represents the core operating system functions, such as memory management, processes, files, inputs / main outputs and parley functions.The shell This enables communication with the operating system through a control language, allowing the user to control the device without knowing the characteristics of hardware, the management of physical addresses, and so on.First operating system was highly-developed by IBM with a junior man named Bill Gates, this could run on different computers from different manufacturers, it was called DOS (Disk Operating System), but differences between the parties did not set off a pitch. DOS was just a text screen with a financial statement line that tells us which directory as we were only data for guidance. You had to know that things had to write for the machine to do something. There wasnt a context menu, and graphical displa ys to ladder us.But in the beginning there were these systems presented so elegantly with some colors, there was only the command line interface that to only quite a little who had great computer knowledge could use the computers.OPERATING SYSTEM IN THE 80sAt 80s appear macintosh OS systems and MS-DOS, Windows.The exponential growth of users, more or less of them without any knowledge of languages for high or low, made in the 80, the anteriority of excogitationing an operating system was the ease of use, thus resulting the starting line user interfaces.Macintosh is the name under which we currently refer to any personalised computer designed, developed, built and marketed by Apple Inc. Macintosh 128K was released on July 22, 1984 and was the first personal computer that was successfully marketed, which used a GUI and cringe instead of the standard of that time, the command line interfaceGUI makes use of a WIMP environment (windows, icons, menus and pointer). The background of the screen is called desktop, which contents an go out called icons.Apple in 1984 produced the Macintosh, the first computer with mouse and graphical user interface (GUI). A few years later, Microsoft launched Windows, another operating system based in graphics and intuitive toolsList of OSWindows 7Windows XP ProfessionalUbuntuMacintosh OSXMicrosoft viewFedoraMac OS X LeopardMicrosoft Windows 1.0Xandros LinuxMicrosoft Windows 3.1UnixLinuxMicrosoft WindowsMicrosoft Windows is a series of software operating system based in graphical users interfaces produced by Microsoft.The different versions of Windows areWindows 1.0Windows 2.0Windows 3.0Windows 95Windows 98Windows XPWindows VistaWindows 7Mac OSMac OS is an operating systems developed by Apple Computer Inc. Macintosh is popular because the graphical user interface, it was the integral and unnamed system software first introduced in 1984 but is usually it referred to simply as the system software.Mac OS can be divided into two familiesThe Mac OS Classic family.The Mac OS X operating system.UNIXThis was developed in 1969 by a group of employees of AT T Bell Labs, including Ken Thompson, Dennis Ritchie, Brian Kernighan, Douglas Mcllroy, and Joe Ossanna. UNIX was developed in assembly language, but 1973 had been almost completely recoded in C, facilitating their development and migration to other hardware. This Operating Systems found on mainframes and workstations in corporate Installations.LinuxLinux has its origin in UNIX. He showed in the sixties, developed by researchers Dennis Ritchie and Ken Thompson of AT T Bell Labs.Andrew Tanenbaum developed a Unix-like operating system called Minix to teach students to design an operating system. Due to the teaching approach of Minix, Tanenbaum never allowed him to be altered, and complications that could be introduced into the system for their students, but Finnish student named Linus Torvalds, verifying that it was not contingent to extend Minix, decided to w rite his own operating system congenial with UNIX.Linux can be installed on all kind of computer no matter the hardware. This O.S is a leading server operative system, and can runs the 10 fastest supercomputers in the entire world, and the best two thing of it is that u dont get virus and is free.Mobile Operating SystemThe mobile O.S is the Operating system that controls all mobile devices.The different systems for mobiles areWindows MobilePalms OSBlackBerry OSSymbian OSAndroid