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  2. Alan Archibald Campbell-Swinton - Wikipedia

    en.wikipedia.org/wiki/Alan_Archibald_Campbell-S...

    9 Albyn Place, Edinburgh, Campbell-Swinton's Edinburgh home has a plaque to his memory. Alan Archibald Campbell-Swinton FRS (18 October 1863 – 19 February 1930) was a Scottish consulting electrical engineer, who provided the theoretical basis for the electronic television, two decades before the technology existed to implement it. [1]

  3. RCA - Wikipedia

    en.wikipedia.org/wiki/RCA

    RCA Victor began selling the first all-electric Victrola in 1930 and in 1931 the company attempted to revitalize record sales with the introduction of 33 1 ⁄ 3 revolutions-per-minute (rpm) long play records, which were a commercial failure during the Great Depression, partly because the Victrolas with two speed turntables required to play ...

  4. History of PDF - Wikipedia

    en.wikipedia.org/wiki/History_of_PDF

    The Portable Document Format (PDF) was created by Adobe Systems, introduced at the Windows and OS/2 Conference in January 1993 and remained a proprietary format until it was released as an open standard in 2008.

  5. History of television - Wikipedia

    en.wikipedia.org/wiki/History_of_television

    A television set, also called a television receiver, television, TV set, TV, or telly, is a device that combines a tuner, display, and speakers for the purpose of viewing television. Introduced in the late 1920s in mechanical form, television sets became a popular consumer product after World War II in electronic form, using cathode ray tubes .

  6. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    The Preview application can display PDF files, as can version 2.0 and later of the Safari web browser. System-level support for PDF allows macOS applications to create PDF documents automatically, provided they support the OS-standard printing architecture. The files are then exported in PDF 1.3 format according to the file header.

  7. Handheld television - Wikipedia

    en.wikipedia.org/wiki/Handheld_television

    Elements of a pocket television CRT: (1) Recessed Screen, (2) Electron Beam, (3) Electron Gun. These devices often have stereo 1⁄8 inch (3.5 mm) phono plugs for composite video-analog mono audio relay to serve them as composite monitors; also, some models have mono 3.5 mm jacks for the broadcast signal that is usually relayed via F connector or Belling-Lee connector on standard television ...

  8. Technology of television - Wikipedia

    en.wikipedia.org/wiki/Technology_of_television

    The elements of a simple broadcast television system are: . An image source. This is the electrical signal that represents a visual image, and may be derived from a professional video camera in the case of live television, a video tape recorder for playback of recorded images, or telecine with a flying spot scanner for the transfer of motion pictures to video).

  9. Charles Francis Jenkins - Wikipedia

    en.wikipedia.org/wiki/Charles_Francis_Jenkins

    The Academy of Television Arts & Sciences, best known for the annual Emmy Awards, commemorates the contributions of Jenkins to the television industry by naming one of the academy's most prestigious awards after him: the Charles F. Jenkins Lifetime Achievement Award is a special engineering honor to an individual whose contributions over time ...