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  2. Product key - Wikipedia

    en.wikipedia.org/wiki/Product_key

    A product key, also known as a software key, serial key or activation key, is a specific software-based key for a computer program. It certifies that the copy of the program is original. Product keys consist of a series of numbers and/or letters. This sequence is typically entered by the user during the installation of computer software, and is ...

  3. Microsoft Product Activation - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Product_Activation

    Microsoft Product Activation is a DRM technology used by Microsoft Corporation in several of its computer software programs, most notably its Windows operating system and its Office productivity suite. The procedure enforces compliance with the program's end-user license agreement by transmitting information about both the product key used to ...

  4. Control-Alt-Delete - Wikipedia

    en.wikipedia.org/wiki/Control-Alt-Delete

    Control-Alt-Delete. Control-Alt-Delete (often abbreviated to Ctrl+Alt+Del and sometimes called the "three-finger salute" or "Security Keys") [ 1][ 2] is a computer keyboard command on IBM PC compatible computers, invoked by pressing the Delete key while holding the Control and Alt keys: Ctrl + Alt + Delete. The function of the key combination ...

  5. List of PDF software - Wikipedia

    en.wikipedia.org/wiki/List_of_PDF_software

    As with Adobe Acrobat, Nitro PDF Pro's reader is free; but unlike Adobe's free reader, Nitro's free reader allows PDF creation (via a virtual printer driver, or by specifying a filename in the reader's interface, or by drag-'n-drop of a file to Nitro PDF Reader's Windows desktop icon); Ghostscript not needed. PagePlus: Proprietary: No

  6. Modifier key - Wikipedia

    en.wikipedia.org/wiki/Modifier_key

    Modifier key. In computing, a modifier key is a special key (or combination) on a computer keyboard that temporarily modifies the normal action of another key when pressed together. By themselves, modifier keys usually do nothing; that is, pressing any of the ⇧ Shift, Alt, or Ctrl keys alone does not (generally) trigger any action from the ...

  7. Free Fire (video game) - Wikipedia

    en.wikipedia.org/wiki/Free_Fire_(video_game)

    Free Fire is a free-to-play battle royale game developed and published by Garena for Android and iOS. [ 4] It was released on 8 December 2017. It became the most downloaded mobile game globally in 2019 and has over 1 billion downloads on Google Play Store. In the first quarter of 2021 it was the highest grossing mobile game in the US. [ 5]

  8. Computer keyboard - Wikipedia

    en.wikipedia.org/wiki/Computer_keyboard

    Typing on a laptop 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 ...

  9. Software protection dongle - Wikipedia

    en.wikipedia.org/wiki/Software_protection_dongle

    Software protection dongle. A software protection dongle (commonly known as a dongle or key) is an electronic copy protection and content protection device. When connected to a computer or other electronics, they unlock software functionality or decode content. [ 1] The hardware key is programmed with a product key or other cryptographic ...