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  2. Embedded system - Wikipedia

    en.wikipedia.org/wiki/Embedded_system

    Embedded system. An embedded system is a computer system —a combination of a computer processor, computer memory, and input/output peripheral devices—that has a dedicated function within a larger mechanical or electronic system. [ 1][ 2] It is embedded as part of a complete device often including electrical or electronic hardware and ...

  3. Information technology - Wikipedia

    en.wikipedia.org/wiki/Information_technology

    v. t. e. Information technology ( IT) is a set of related fields that encompass computer systems, software, programming languages, and data and information processing, and storage. [ 1] IT forms part of information and communications technology (ICT). [ 2] An information technology system ( IT system) is generally an information system, a ...

  4. Direct memory access - Wikipedia

    en.wikipedia.org/wiki/Direct_memory_access

    Direct memory access. Direct memory access ( DMA) is a feature of computer systems that allows certain hardware subsystems to access main system memory independently of the central processing unit (CPU). [ 1]

  5. Computer science - Wikipedia

    en.wikipedia.org/wiki/Computer_science

    Computer science. Computer science is the study of computation, information, and automation. [ 1][ 2][ 3] Computer science spans theoretical disciplines (such as algorithms, theory of computation, and information theory) to applied disciplines (including the design and implementation of hardware and software ). [ 4][ 5][ 6] Algorithms and data ...

  6. Computer - Wikipedia

    en.wikipedia.org/wiki/Computer

    A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations ( computation ). Modern digital electronic computers can perform generic sets of operations known as programs. These programs enable computers to perform a wide range of tasks. The term computer system may refer to a nominally ...

  7. Single-board computer - Wikipedia

    en.wikipedia.org/wiki/Single-board_computer

    A single-board computer ( SBC) is a complete computer built on a single circuit board, with microprocessor (s), memory, input/output (I/O) and other features required of a functional computer. Single-board computers are commonly made as demonstration or development systems, for educational systems, or for use as embedded computer controllers.

  8. Operating system - Wikipedia

    en.wikipedia.org/wiki/Operating_system

    An operating system ( OS) is system software that manages computer hardware and software resources, and provides common services for computer programs . Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, peripherals, and ...

  9. Horizontal coordinate system - Wikipedia

    en.wikipedia.org/wiki/Horizontal_coordinate_system

    The horizontal coordinate system is a celestial coordinate system that uses the observer's local horizon as the fundamental plane to define two angles of a spherical coordinate system: altitude and azimuth . Therefore, the horizontal coordinate system is sometimes called the az/el system, [ 1] the alt/az system, or the alt-azimuth system, among ...