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  2. Riser card - Wikipedia

    en.wikipedia.org/wiki/Riser_card

    Motherboard of an IBM PS/ValuePoint personal computer model (c. from 1993 to 1995) with an Intel i486SX microprocessor, with an elongated connector (black, horizontally in the middle/left between upper and lower edge) for the riser card on which the ISA bus slots were located. A riser card is a printed circuit board that gives a computer ...

  3. Vestibular system - Wikipedia

    en.wikipedia.org/wiki/Vestibular_system

    The vestibular system, in vertebrates, is a sensory system that creates the sense of balance and spatial orientation for the purpose of coordinating movement with balance. Together with the cochlea, a part of the auditory system, it constitutes the labyrinth of the inner ear in most mammals . As movements consist of rotations and translations ...

  4. Direct memory access - Wikipedia

    en.wikipedia.org/wiki/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. 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 ...

  6. OSI model - Wikipedia

    en.wikipedia.org/wiki/OSI_model

    1. Physical layer. The Open Systems Interconnection ( OSI) model is a reference model from the International Organization for Standardization (ISO) that "provides a common basis for the coordination of standards development for the purpose of systems interconnection." [ 2] In the OSI reference model, the communications between systems are split ...

  7. Mobilities - Wikipedia

    en.wikipedia.org/wiki/Mobilities

    Mobilities. Mobilities is a contemporary paradigm in the social sciences that explores the movement of people ( human migration, individual mobility, travel, transport ), ideas (see e.g. meme) and things (transport), as well as the broader social implications of those movements. Mobility can also be thought as the movement of people through ...

  8. 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 ...

  9. Lidar - Wikipedia

    en.wikipedia.org/wiki/Lidar

    Lidar ( / ˈlaɪdɑːr /, also LIDAR, LiDAR or LADAR, an acronym of "light detection and ranging" [ 1 ] or "laser imaging, detection, and ranging" [ 2 ]) is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver.