A computer is a programmable machine that receives input, stores and automatically manipulates data, and provides output in a useful format.
Although mechanical examples of computers have existed through much of recorded human history, the first electronic computers were developed in the mid-20th century (1940 - 1945). These were the size of a large room, consuming as much power as several hundred modern personal computers (PCs). Modern computers based on
integrated circuits are millions to billions of times more capable than the early
machines, and occupy a fraction of the space.
Operating Systems Websites (9)
An operating system(os) is the software component of a computer system that is responsible for the management and coordination of activities and the sharing of the resources of the computer. The operating system (OS) acts as a host for application programs that are run on the machine. As a host, one of the purposes of an operating system is to handle the details of the operation of the hardware. This relieves application programs from having to manage these details and makes it easier to write applications. Almost all computers, including hand-held computers, desktop computers, supercomputers, and even modern video game consoles, use an operating system of some type. See also Computer systems architecture.
Operating systems offer a number of services to application programs and users. Applications access these services through application programming interfaces (APIs) or system calls. By invoking these interfaces, the application can request a service from the operating system, pass parameters, and receive the results of the operation. Users may also interact with the operating system by typing commands or using a graphical user interface (GUI, commonly pronounced “guoey”). For hand-held and desktop computers, the GUI is generally considered part of the operating system. For large multiuser systems, the GUI is generally implemented as an application program that runs outside the operating system. See also Computer programming; Human-computer interaction.
Common contemporary operating systems include Microsoft Windows, Mac OS X, AmigaOS, Linux and Solaris. Microsoft Windows has a significant majority of market share in the desktop and notebook computer markets, while the server and embedded device markets are split amongst several operating systems.
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Mabuntu Linux is a ubuntu based distro. Whats included in Mabuntu is extra extra programs installed that are useful for anyone who might have little trouble installing programs that aren't installed already in ubuntu.
Microsoft Windows 2000 is the first ever version created by Microsoft to introduce the NTFS technology. It is based on advanced language, and supports multiprocessing.
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Operating System Book provides complete information about Definition, OS Book, Free Ebook, Functions of OS, Necessitate, Characteristics of Operating System, Process Management, Process state, Program, Process Control Block (PCB), Kernel, Time Sharing System, File Management, Memory Management, Evolution, Software, MS DOS, Threads, UNIX OS, Operating System Factors, OS Types.
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