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  2. RC-5 - Wikipedia

    en.wikipedia.org/wiki/RC-5

    Since the repetition of the 36 kHz carrier is 27.778 μs and the duty factor is 25 %, the carrier pulse duration is 6.944 μs. Each bit of the RC-5 code word contains 32 carrier pulses, and an equal duration of silence, so the bit time is 64×27.778 μs = 1.778 ms, and the 14 symbols (bits) of a complete RC-5 code word take 24.889 ms to transmit.

  3. Mullard–Philips tube designation - Wikipedia

    en.wikipedia.org/wiki/Mullard–Philips_tube...

    Mullard initially handled semiconductor naming by using the "O" heater code (shifting "Cold Cathode" to a code of "Z"). The second letter broadly indicated the type of device, roughly following the tube designation, without indicating the semiconductor material: A low-power semiconductor diode, e.g. OA7

  4. List of MeSH codes (D27) - Wikipedia

    en.wikipedia.org/wiki/List_of_MeSH_codes_(D27)

    The following is a partial list of the "D" codes for Medical Subject Headings (MeSH), as defined by the United States National Library of Medicine (NLM). This list continues the information at List of MeSH codes (D26). Codes following these are found at List of MeSH codes (E01). For other MeSH codes, see List of MeSH codes.

  5. Universal remote - Wikipedia

    en.wikipedia.org/wiki/Universal_remote

    Harmony 670, a universal remote. A universal remote is a remote control that can be programmed to operate various brands of one or more types of consumer electronics devices. . Low-end universal remotes can only control a set number of devices determined by their manufacturer, while mid- and high-end universal remotes allow the user to program in new control codes to the re

  6. List of airline codes (S) - Wikipedia

    en.wikipedia.org/wiki/List_of_airline_codes_(S)

    This is a list of all airline codes. The table lists the IATA airline designators , the ICAO airline designators and the airline call signs (telephony designator). Historical assignments are also included for completeness.

  7. List of Mullard–Philips vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_Mullard–Philips...

    Most post-war European thermionic valve (vacuum tube) manufacturers have used the Mullard–Philips tube designation naming scheme. Special quality variants may have the letter "S" appended, or the device description letters may be swapped with the numerals (e.g. an E82CC is a special quality version of an ECC82)

  8. Philco - Wikipedia

    en.wikipedia.org/wiki/Philco

    [citation needed] Philco had been able to keep Philips from using its trademark because of the similar-sounding names, so Philips had sold its products in the United States under the name "Norelco". Philips later used the Philco name for promotional consumer electronics and licensed the name for private brands and retro-style consumer electronics.

  9. List of airports by IATA airport code: A - Wikipedia

    en.wikipedia.org/wiki/List_of_airports_by_IATA...

    "United Nations Code for Trade and Transport Locations". UN/LOCODE 2011-2. UNECE. 28 February 2012. - includes IATA codes "ICAO Location Indicators by State" (PDF). International Civil Aviation Organization. 17 September 2010. Archived from the original (PDF) on 25 March 2019; Aviation Safety Network - IATA and ICAO airport codes