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  2. Morse code - Wikipedia

    en.wikipedia.org/wiki/Morse_code

    Chart of the Morse code 26 letters and 10 numerals [1]. This Morse key was originally used by Gotthard railway, later by a shortwave radio amateur [2]. Morse code is a telecommunications method which encodes text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs.

  3. Free software - Wikipedia

    en.wikipedia.org/wiki/Free_software

    Free software advocates strongly believe that this methodology is biased by counting more vulnerabilities for the free software systems, since their source code is accessible and their community is more forthcoming about what problems exist as a part of full disclosure, [39] [40] and proprietary software systems can have undisclosed societal ...

  4. 100% renewable energy - Wikipedia

    en.wikipedia.org/wiki/100%_renewable_energy

    No uniform definition for 100% renewable energy systems has been adopted across the published literature. [10]Recent studies show that a global transition to 100% renewable energy across all sectors – power, heat, transport and desalination well before 2050 is feasible.

  5. Free and open-source software - Wikipedia

    en.wikipedia.org/wiki/Free_and_open-source_software

    "Free and open-source software" (FOSS) is an umbrella term for software that is simultaneously considered both free software and open-source software. [5] The precise definition of the terms "free software" and "open-source software" applies them to any software distributed under terms that allow users to use, modify, and redistribute said software in any manner they see fit, without requiring ...

  6. Economy of the United States - Wikipedia

    en.wikipedia.org/wiki/Economy_of_the_United_States

    Annualized, nominal GDP reached $20.1 trillion in Q1 2018, the first time it exceeded $20 trillion. About 70% of U.S. GDP is personal consumption, with business investment 18%, government 17% (federal, state and local but excluding transfer payments such as Social Security, which is in consumption) and net exports a negative 3% due to the U.S ...

  7. News Corporation - Wikipedia

    en.wikipedia.org/wiki/News_Corporation

    News Corp was established in 1980 by Rupert Murdoch as a holding company for News Limited.News Limited was founded in 1923 in Adelaide by James Edward Davidson, funded by the Collins House mining empire for the purpose of publishing anti-union propaganda; [9] [10] subsequently the controlling interest was bought by the Herald & Weekly Times.

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