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      An Operating System is a program that controls the execution of application programs and acts as an interface between the user of a computer and the computer hardware. In other words “The software that controls the hardware”. Some examples of operating systems are UNIX, Mach, MS-Dos, Ms-windows, Windows/NT, OS/2, MacOS, VMS, MUS and VM.      An Operating system exploits the hardware resources of one or more processors to provide a set of services to system users. The operating system also manages secondary memory and I/O devices on behalf of its users. Controlling the computer involves software at several levels. We will differentiate kernel services, library services, and application-level services, all of which are part of operating system. Process run Application, which are linked together with libraries perform standard services. The kernel supports the processes by providing a path to the peripheral devises. The kernel re...

Information  can be defined as data that has been processed into a form that is meaningful to the recipient and is of real or perceived value in current of prospective decisions.  or Information refers to an input of data processing which is organized and meaningful to the person who receives it. In general, the planning information requirements of executives can be categorized into three broad categories . Which are as follows:  Environmental Information  Competitive Information  Internal Information  Environmental Information Government Policies: Information about concessions, benefits, government policies in respect of tax concessions of for any other aspect, which may be useful to an organization in the future period. Factors of Production: Information related with source, cost, location, availability, accessibility and productivity of the major factors of production. viz Capital, Labor, Material etc. Technological Environment: Forecast of any technolog...

Definitions of  Information technology  ( IT ) It is a branch of engineering dealing with the use of computers and telecommunications equipment to store, retrieve, transmit and manipulate data. The term is commonly used as a synonym for computers and computer networks, but it also encompasses other information distribution technologies such as television and telephones. Information is s vital resource in development activities of any society. All our economic and social progress depends very significantly in the transfer of commercial, scientific and technical information. People in different situations require information on a subject in different forms and with different emphasis. Information is obtained through processing of data. The storage, retrieval and processing of data become the essential resource for all economic and social exchanges. Data is the recording of any meaningful event in any understandable form. The methods used to collect and store the data, process t...