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  2. Radar beacon - Wikipedia

    en.wikipedia.org/wiki/Radar_beacon

    Radar beacon. Racon signal as seen on a radar screen. This beacon receives using sidelobe suppression and transmits the letter "Q" in Morse code near Boston Harbor (Nahant) 17 January 1985. Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1 ...

  3. Lotus 1-2-3 - Wikipedia

    en.wikipedia.org/wiki/Lotus_1-2-3

    The Japanese version Lotus 1-2-3 Release 2.2J was released in February 1990. [49] Release 2.3 brought WYSIWYG editing to the 2.x line. Introduced in 1991. [50] The Japanese version Lotus 1-2-3 Release 2.3J was released in September 1991. [51] Release 2.4 added icons and additional tools, and was the last release supporting 2D (only) spreadsheets.

  4. List of awareness ribbons - Wikipedia

    en.wikipedia.org/wiki/List_of_awareness_ribbons

    List of awareness ribbons. It has been suggested that this article be merged with Pink and blue ribbon. ( Discuss) Proposed since March 2024. This is a partial list of awareness ribbons. The meaning behind an awareness ribbon depends on its colors and pattern. Since many advocacy groups have adopted ribbons as symbols of support or awareness ...

  5. Voter registration scams are now everywhere. Here's how to ...

    www.aol.com/news/voter-registration-scams-now...

    August 11, 2024 at 11:07 AM. Scams asking people for personal information to fix their voter registration are rising. Bloomberg Creative/Getty Images. Officials are warning about voter ...

  6. Web Content Accessibility Guidelines - Wikipedia

    en.wikipedia.org/wiki/Web_Content_Accessibility...

    Priority 1: Web developers must satisfy these requirements, otherwise it will be impossible for one or more groups to access the Web content. Conformance to this level is described as A. Priority 2: Web developers should satisfy these requirements, otherwise some groups will find it difficult to access the Web content.

  7. Ten-code - Wikipedia

    en.wikipedia.org/wiki/Ten-code

    Ten-code. Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by US public safety officials and in citizens band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code.[ 1]

  8. Stub (electronics) - Wikipedia

    en.wikipedia.org/wiki/Stub_(electronics)

    Stub (electronics) Resonant stub tank circuits in vacuum tube backpack UHF transceiver, 1938. About 1/8 wavelength long: (left) 200 MHz stub is 19 cm, (right) 300 MHz stub is 12.5 cm. In microwave and radio-frequency engineering, a stub or resonant stub is a length of transmission line or waveguide that is connected at one end only.

  9. List of TCP and UDP port numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_TCP_and_UDP_port...

    The port numbers in the range from 0 to 1023 (0 to 2 10 − 1) are the well-known ports or system ports. [3] They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the ...