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  2. Pointing stick - Wikipedia

    en.wikipedia.org/wiki/Pointing_stick

    A pointing stick (or trackpoint, also referred to generically as a nub or nipple) is a small analog stick used as a pointing device typically mounted centrally in a computer keyboard. Like other pointing devices such as mice, touchpads or trackballs, operating system software translates manipulation of the device into movements of the pointer ...

  3. Backlight - Wikipedia

    en.wikipedia.org/wiki/Backlight

    Backlight. A backlight is a form of illumination used in liquid-crystal displays (LCDs) that provides illumination from the back or side of a display panel. LCDs do not produce light by themselves, so they need illumination ( ambient light or a special light source) to produce a visible image. Backlights are often used in smartphones, computer ...

  4. Dell Precision - Wikipedia

    en.wikipedia.org/wiki/Dell_Precision

    Dell Precision is a series of computer workstations for computer-aided design/architecture/computer graphics professionals, or as small-scale business servers [citation needed]. They are available in both desktop (tower) and mobile (laptop) form.

  5. History of laptops - Wikipedia

    en.wikipedia.org/wiki/History_of_laptops

    The IBM PS/2 note was a first IBM laptop with clamshell design, and the 1992's CL57sx model was IBM's first commercial laptop with color screen; the introduced options and features include the now-common peripherals-oriented PS/2 port as mobile device option, introduced the laptop BIOS and predecessor of laptop docking station (IBM ...

  6. Power-on self-test - Wikipedia

    en.wikipedia.org/wiki/Power-on_self-test

    Power-on self-test. A power-on self-test ( POST) is a process performed by firmware or software routines immediately after a computer or other digital electronic device is powered on. [1] POST processes may set the initial state of the device from firmware and detect if any hardware components are non-functional.

  7. Computer keyboard - Wikipedia

    en.wikipedia.org/wiki/Computer_keyboard

    The keyboard sends the key code to the keyboard driver running in the main computer; if the main computer is operating, it commands the light to turn on. All the other indicator lights work in a similar way. The keyboard driver also tracks the Shift, alt and control state of the keyboard.

  8. Pointing device - Wikipedia

    en.wikipedia.org/wiki/Pointing_device

    A light pen is a device similar to a touch screen, but uses a special light-sensitive pen instead of the finger, which allows for more accurate screen input. As the tip of the light pen makes contact with the screen, it sends a signal back to the computer containing the coordinates of the pixels at that point. It can be used to draw on the ...

  9. Model M keyboard - Wikipedia

    en.wikipedia.org/wiki/Model_M_keyboard

    Model M keyboards are a group of computer keyboards designed and manufactured by IBM starting in 1985, and later by Lexmark International, Maxi Switch, and Unicomp. The keyboard's different variations have their own distinct characteristics, with the vast majority having a buckling-spring key design and uniform profile, swappable keycaps.

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