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  2. List of Microsoft Windows versions - Wikipedia

    en.wikipedia.org/wiki/List_of_Microsoft_Windows...

    Windows Mobile 6.1: April 1, 2008 CE 5.2 Windows Mobile 6.1.4: 6 on 6 November 11, 2008 [8] Windows Mobile 6.5: Titanium May 11, 2009 CE 6.0 Windows Phone 7 [j] Metro ARMv7: October 29, 2010 Windows Phone 7.5: Mango: September 27, 2011 Windows Phone 7.8: Tango: February 1, 2013 Windows Phone 8: Apollo October 29, 2012 NT 6.2 Windows Phone 8.1 ...

  3. Microsoft Windows version history - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Windows_version...

    Windows 1.0, the first independent version of Microsoft Windows, released on November 20, 1985, achieved little popularity. The project was briefly codenamed "Interface Manager" before the windowing system was implemented—contrary to popular belief that it was the original name for Windows and Rowland Hanson, the head of marketing at Microsoft, convinced the company that the name Windows ...

  4. Comparison of Microsoft Windows versions - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_Microsoft...

    Microsoft Windows is the name of several families of computer software operating systems created by Microsoft.Microsoft first introduced an operating environment named Windows in November 1985 as an add-on to MS-DOS in response to the growing interest in graphical user interfaces (GUIs).

  5. Two- and four-stroke engines - Wikipedia

    en.wikipedia.org/wiki/Two-_and_four-stroke_engines

    The M4+2 engine, also known as the double-piston internal combustion engine, is a type of internal combustion engine invented by Polish patent holder Piotr Mężyk. [1] The M4+2 engine took its name from a combination of two-stroke engines and four-stroke engines. The two-stroke combustion engine is characterized by a simple construction and ...

  6. Microsoft Windows - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Windows

    Windows is a product line of proprietary graphical operating systems developed and marketed by Microsoft.It is grouped into families and subfamilies that cater to particular sectors of the computing industry – Windows (unqualified) for a consumer or corporate workstation, Windows Server for a server and Windows IoT for an embedded system.

  7. Five-stroke engine - Wikipedia

    en.wikipedia.org/wiki/Five-stroke_engine

    In 1879, Nicolaus Otto built a 5-stroke engine which was commercially produced, but suffered from poor performance. [2] Two Spanish patents (ES0156621, F Jimeno-Cataneo, 1942; and ES0433850, C Ubierna-Laciana, 1975) describe 5-stroke engines identical to that of Schmitz's design, this engine had a fellowship to Burgundy University to be studied.

  8. Four-stroke engine - Wikipedia

    en.wikipedia.org/wiki/Four-stroke_engine

    A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction.

  9. 2si 460 - Wikipedia

    en.wikipedia.org/wiki/2si_460

    The 2si 460 is a family of in-line twin-cylinder, two-stroke, single ignition, aircraft engines that were designed for ultralight aircraft. [1]The basic engine was originally designed and produced by ILO-Motorenwerke of Germany and was later acquired by the AMW Cuyuna Engine Company of Beaufort, South Carolina and marketed under the Cuyuna brand name.