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  2. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    An order from the engineering department (to be followed by the production department or vendor) overriding/superseding a detail on the drawing, which gets superseded with revised information. Also called by various other names, such as engineering change order (ECO), engineering change notice (ECN), drawing change notice (DCN), and so on.

  3. Glossary of electrical and electronics engineering - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_electrical_and...

    A four layer semiconductor switching device that can stand off an applied voltage until triggered by an electrical pulse on a control lead. Silicon Valley Initially, a region of California known for a large number of electronics technology firms. sine wave The waveform of the mathematical sine function; a fundamental wave shape, free of harmonics.

  4. List of computing and IT abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_computing_and_IT...

    ECN—Explicit Congestion Notification; ECOS—Embedded Configurable Operating System; ECRS—Expense and Cost Recovery System; ECS—Entity-Component-System; EDA—Electronic Design Automation; EDGE—Enhanced Data rates for GSM Evolution; EDI—Electronic Data Interchange; EDO—Extended Data Out; EDSAC—Electronic Delay Storage Automatic ...

  5. Explicit Congestion Notification - Wikipedia

    en.wikipedia.org/wiki/Explicit_Congestion...

    Explicit Congestion Notification (ECN) is an extension to the Internet Protocol and to the Transmission Control Protocol and is defined in RFC 3168 (2001). ECN allows end-to-end notification of network congestion without dropping packets. ECN is an optional feature that may be used between two ECN-enabled endpoints when the underlying network ...

  6. Ethernet consist network - Wikipedia

    en.wikipedia.org/wiki/Ethernet_Consist_Network

    Ethernet Consist Network (ECN) is a train communication network based on Ethernet technology standardised with IEC-61375-3-.This is a vehicle (consist) communication like Multifunction Vehicle Bus (MVB) in train communication network (TCN).

  7. What Is Pi Day? Here’s How the Mathematical Symbol Turned ...

    www.aol.com/pi-day-mathematical-symbol-turned...

    If you want to get even more technical about it, the exact time to celebrate Pi Day would be 1:59 a.m. or p.m., as the first six digits of Pi are 3.14159. Coincidentally, March 14 is also the date ...

  8. Electronic communication network - Wikipedia

    en.wikipedia.org/wiki/Electronic_communication...

    An electronic communication network (ECN) is a type of computerized forum or network that facilitates the trading of financial products outside traditional stock exchanges. An ECN is generally an electronic system accessed by an electronic trading platform that widely disseminates orders entered by market makers to third parties and permits the ...

  9. (3.)14 Ways to Celebrate Pi Day (Besides Eating a Big Slice ...

    www.aol.com/3-14-ways-celebrate-pi-130058864.html

    In 1988, physicist Larry Shaw decided this enigmatic number deserved its own holiday and started Pi Day, choosing March 14 to represent the first three digits of pi—and because it also happens ...