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  2. Wikipedia - Wikipedia

    en.wikipedia.org/wiki/Wikipedia

    OCLC number. 52075003. Wikipedia [note 3] is a free content online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the use of the wiki -based editing system MediaWiki. Wikipedia is the largest and most-read reference work in history.

  3. Beta decay - Wikipedia

    en.wikipedia.org/wiki/Beta_decay

    Description. The two types of beta decay are known as beta minus and beta plus.In beta minus (β −) decay, a neutron is converted to a proton, and the process creates an electron and an electron antineutrino; while in beta plus (β +) decay, a proton is converted to a neutron and the process creates a positron and an electron neutrino. β + decay is also known as positron emission.

  4. Microsoft Office 2019 - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Office_2019

    Microsoft Office 2019 (second release codenamed Office 16) is a version of Microsoft Office for both Windows and Mac. It replaces Office 2016 and was replaced by Office 2021 on October 5, 2021. [8] It was unveiled on April 27, 2018, for Windows 10 and June 12, 2018, for macOS, and launched on September 24, 2018. [1]

  5. Page Up and Page Down keys - Wikipedia

    en.wikipedia.org/wiki/Page_Up_and_Page_Down_keys

    The Page Up and Page Down keys (sometimes abbreviated as PgUp and PgDn) are two keys commonly found on computer keyboards . The two keys are primarily used to scroll up or down in documents, but the scrolling distance varies between different applications. In word processors, for instance, they may jump by an emulated physical page or by a ...

  6. AOL Help

    help.aol.com

    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.

  7. Telephone numbers in Mexico - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Mexico

    Country code. 52. Telephone numbers in Mexico are regulated by the Federal Telecommunications Institute, an independent government agency of Mexico. The agency published the Fundamental Technical Plan for Numbering ( Plan Técnico Fundamental de Numeración) on May 11, 2013. [1] The plan establishes a uniform ten-digit telephone number format.

  8. Two's complement - Wikipedia

    en.wikipedia.org/wiki/Two's_complement

    The two's complement of an integer is computed by: Step 1: starting with the absolute binary representation of the number, with the leading bit being a sign bit; [3] Step 2: inverting (or flipping) all bits – changing every 0 to 1, and every 1 to 0; Step 3: adding 1 to the entire inverted number, ignoring any overflow.

  9. Logarithm - Wikipedia

    en.wikipedia.org/wiki/Logarithm

    In mathematics, the logarithm is the inverse function to exponentiation. That means that the logarithm of a number x to the base b is the exponent to which b must be raised to produce x. For example, since 1000 = 103, the logarithm base of 1000 is 3, or log10 (1000) = 3.