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  2. Computer keyboard - Wikipedia

    en.wikipedia.org/wiki/Computer_keyboard

    A computer keyboard is a peripheral input device modeled after the typewriter keyboard [1] [2] which uses an arrangement of buttons or keys to act as mechanical levers or electronic switches. Replacing early punched cards and paper tape technology, interaction via teleprinter -style keyboards have been the main input method for computers since ...

  3. Fn key - Wikipedia

    en.wikipedia.org/wiki/Fn_key

    Fn key on a Dell Inspiron 1150 laptop Fn key on a USB Raspberry Pi keyboard. The Fn key, short form for function, is a modifier key on many keyboards, especially external keyboards, and is not available for mobile devices. For use in a compact layout, combine keys which are normally kept separate.

  4. 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.

  5. USB hardware - Wikipedia

    en.wikipedia.org/wiki/USB_hardware

    A USB cable, by definition, has a plug on each end—one A (or C) and one B (or C)—and the corresponding receptacle is usually on a computer or electronic device. The mini and micro formats may connect to an AB receptacle, which accepts either an A or a B plug, that plug determining the behavior of the receptacle.

  6. Keyboard layout - Wikipedia

    en.wikipedia.org/wiki/Keyboard_layout

    A typical 105-key computer keyboard, consisting of sections with different types of keys. A computer keyboard consists of alphanumeric or character keys for typing, modifier keys for altering the functions of other keys, [1] navigation keys for moving the text cursor on the screen, function keys and system command keys—such as Esc and Break—for special actions, and often a numeric keypad ...

  7. USB human interface device class - Wikipedia

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

    The USB HID class describes devices used with nearly every modern computer. Many predefined functions exist in the USB HID class. These functions allow hardware manufacturers to design a product to USB HID class specifications and expect it to work with any software that also meets these specifications. The same HID protocol is used unmodified ...

  8. Hot swapping - Wikipedia

    en.wikipedia.org/wiki/Hot_swapping

    Hot-swapping a hard drive in a storage server. Hot swapping is the replacement or addition of components to a computer system without stopping, shutting down, or rebooting the system; [ 1] hot plugging describes the addition of components only. [ 2] Components which have such functionality are said to be hot-swappable or hot-pluggable; likewise ...

  9. Table of keyboard shortcuts - Wikipedia

    en.wikipedia.org/wiki/Table_of_keyboard_shortcuts

    Alt + F8 then Arrow Keys / Alt +Right Mouse Button [ notes 11] Ctrl + x, then ^ vertically. Alt +] (snap window to right half of screen), Alt + [ (snap window to left half of screen) Keep window always on top. Ctrl + Alt + Esc (toggles on/off) Hide the focused window.