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nullThe Development Of Computer Operating System The Development Of Computer Operating System Team’s Members:ContentsContentsAbstract Of OS Process Of Development The Latest Development Prospects For Development Abstract Of OSAbstract Of OSOperating system (referred to OS) is a set of system software ，which in charge of computer hardware resources，controls the activities of other programs and provide interactive interface for users. It’s the most basic system software to run directly on the ‘bare metal’， any other software can be run under the support of OS. Operating system is a key component of computer system, responsible for the management and allocation of memory 、determine the priorities of system resources supply and demand 、control I/O devices、operating network and control the file system and other basic task. Process Of DevelopmentProcess Of Development UnixMS-DOSWindowsLinuxProcess Of DevelopmentProcess Of DevelopmentUnix UNIX is developed by the AT&T company. Due to the early version of it is completely free, easy access and modify, so it has been widely accepted. Later, it became the starting point of developing minicomputer OS. Due to the widely used in early stage,It has become a model of operating system. However, it has always belonged to the AT&T company, only those who can afford the license fees can use it,this limits its scope of application. Process Of DevelopmentProcess Of DevelopmentMS-DOS MS-DOS is the abbreviation for Microsoft Disk Operating System,it’s a Disk operating system provided by American Microsoft Corp . MS-DOS is the most commonly used PC compatible with DOS. The most basic consists of a BOOT program based on the MBR and three module file. The three module is input and output module (IO.SYS), file management module (MSDOS.SYS) and command interpretation module (COMMAND.COM). In addition, Microsoft still added some standard external program in the retail MS-DOS system package. It was built a relatively complete Human-computer interaction environment in the disk operating time together with internal command . In August 12, 1981, IBM launched MS-DOS 1.0 personal computer whitch contains Microsoft’s 16 - bit operating system. Process Of DevelopmentProcess Of DevelopmentWindows In November 1985 ,Microsoft released Windows 1.0. It is the first attempt to Microsoft for personal computer operating platform for the graphical user interface. Essentially declared the end of the MS-DOS operating system. Several of the most famous Microsoft OS Process Of DevelopmentProcess Of DevelopmentIn May 22, 1990, the official release of Windows 3.0, due to the great improvement of interface /humanization / memory management and other aspects. Finally obtains the user's identity. In 1994, the Chinese version of windows3.2 release. There are a lot of the pioneers of the windows user is starting from this version of windows system.In 1995, the most sensational events, than during the August Windows95 release, Windows 95 is a mixture of 16 /32 Windows system, the version number is 4. The introduction of Windows95 is an important milepost Microsoft development.On June 25, 1998, Windows 98 was released. This new system is based on Windows 95. It improved the support of the hardware standards . Win98 is so good that many users still prefer it today.Microsoft Windows 2000 (originally known as Windows NT 5.0) is a kind of Windows operating system which is Windows NT series of pure 32-bit graphical . Microsoft released it in December 19, 2000.Windows 2000 is the main operating system for business.On October 25, 2001, Windows XP was released. Windows XP is a try which Microsoft put all user requirements for synthesis of an operating system. It is improved which compares with previous Windows desktop system stability .The cost is lost to support based on DOS program. Because Microsoft has many which was provided by the third party software integrated into the operating system, Windows XP is a barrage of criticism. These softwares include firewalls, Windows Media Player, Windows Messenger, and it is related to Microsoft Pasport network services closely. it is considered by many computer experts as security risks and potential threat to personal privacy. In April 2003, Windows Server 2003 was released. At first, the product was called "Windows the.net Server", secondly it is said as "Windows the.net Server 2003", after the final it was changed to the Windows Server 2003 which were published on March 28, 2003, and listed on the end of April in that year.Windows Vista is the official name of the Microsoft Windows operating system whose code is "Longhorn" (Longhorn)and what is Microsoft corp in the United States developed. On July 22, 2005, six o 'clock in the morning Pacific standard time, Microsoft officially announced the name. On January 29, 2007, Microsoft chairman Bill Gates carrid out the world debut in New York's times square.Process Of DevelopmentProcess Of DevelopmentLinux Originally the Linux kernel was written by Finn Linus Torvalds for personal interests who studied in the school of University of Helsinki. The Linux releaseis what we usually call "Linux operating system", it may be issued by an organization, company or individual.Linux mainly is used to the part of the Linux distributions (often referred to as "distro") . A typical Linux distributions include: the Linux kernel, some GNU libraries and tools, the command line shell, X Window graphic interface and correspondi ng desktop environments, such as KDE or GNOME, and contains thousands of  he compiler from the office suite, application software, text editors to scientific  tools. The Latest DevelopmentThe Latest DevelopmentComputer operating system :windows 7 On October 22, 2009 in the United States and October 23, 2009 in China Microsoft formally released Windows 7 . Windows 7 is developed by Microsoft which revolutionary changes in the operating system. The system is designed to make People's Daily computer operation more simply and quickly, provide efficient and convenient work environment for people. Windows 7 (development code: Blackcomb, and Vienna, later changed to "7") is used for household and commercial work environment, such as laptops, tablet computers, multimedia center .Windows 8 On September 14, 2011, Windows 8 developer preview was released, and Microsoft announced the compatible mobile terminals and will make apple's IOS and Google Android as a Windows 8 main competitors in the mobile space. Beijing time on August 2, the message in the morning,announced that the development of Windows 8 was completed,and launch the RTM version. On October 26, Microsoft launched the Windows 8 officially.Microsoft claims that touch revolution will begin. Windows 8 is a revolutionary change of the operating system.The Latest DevelopmentThe Latest DevelopmentMobile phone operating system:Android Google company bought a mobile phone operating system in a small company after the improvement and optimization, there are a lot of China mobile in the workplace is evolved by the android operating system, such as millet. The latest version android 4.3.IOS apple, based on the Unix operating system development, the system for processing in the process of doing well, this is why apple phones while configuration is not so high but android phones can run so smoothly. The latest version for Ios 6.Windows Phone Microsoft's development, this is not much said, the fire of the fire Prospects For DevelopmentProspects For Development With the development of computer technology and network technology, based on the general mainstream operating system still occupy a larger market share in the future, some operating system will be gradually to the special and miniaturization and other aspects of development, and has the following new features: open sourcing specialty miniaturization and micromation portable network safety or trustednull