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  2. System software - Wikipedia

    en.wikipedia.org/wiki/System_software

    System software was usually supplied by the manufacturer of the computer hardware and was intended to be used by most or all users of that system. Many operating systems come pre-packaged with basic application software. Such software is not considered system software when it can be uninstalled without affecting the functioning of other software.

  3. Systems programming - Wikipedia

    en.wikipedia.org/wiki/Systems_programming

    Systems programming, or system programming, is the activity of programming computer system software.The primary distinguishing characteristic of systems programming when compared to application programming is that application programming aims to produce software which provides services to the user directly (e.g. word processor), whereas systems programming aims to produce software and software ...

  4. Operating system - Wikipedia

    en.wikipedia.org/wiki/Operating_system

    Types of operating systems Single-tasking and multi-tasking. A single-tasking system can only run one program at a time, while a multi-tasking operating system allows more than one program to be running concurrently. This is achieved by time-sharing, where the available processor time is divided between multiple processes.

  5. Software categories - Wikipedia

    en.wikipedia.org/wiki/Software_categories

    Microsoft TechNet and AIS Software categories. This classification has seven major elements. They are: platform and management, education and reference, home and entertainment, content and communication, operations and professional, product manufacturing and service delivery, and line of business . Platform and management— Desktop and network ...

  6. System programming language - Wikipedia

    en.wikipedia.org/wiki/System_programming_language

    System programming language. A system programming language is a programming language used for system programming; such languages are designed for writing system software, which usually requires different development approaches when compared with application software. Edsger Dijkstra referred to these languages as machine oriented high order ...

  7. Software - Wikipedia

    en.wikipedia.org/wiki/Software

    The application software layer interfaces with the operating system, which in turn communicates with the hardware. The arrows indicate information flow. Software is a collection of programs and data that tell a computer how to perform specific tasks. Software often includes associated software documentation. [1]

  8. Shell (computing) - Wikipedia

    en.wikipedia.org/wiki/Shell_(computing)

    In computing, a shell is a computer program that exposes an operating system 's services to a human user or other programs. In general, operating system shells use either a command-line interface (CLI) or graphical user interface (GUI), depending on a computer's role and particular operation. It is named a shell because it is the outermost ...

  9. Systems architecture - Wikipedia

    en.wikipedia.org/wiki/Systems_architecture

    A system architecture primarily concentrates on the internal interfaces among the system's components or subsystems, and on the interface (s) between the system and its external environment, especially the user. (In the specific case of computer systems, this latter, special, interface is known as the computer human interface, AKA human ...