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  2. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    A reference designator unambiguously identifies the location of a component within an electrical schematic or on a printed circuit board.The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15.

  3. List of battery sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_battery_sizes

    A Battery: Eveready 742: 1.5 V: Metal tabs H: 101.6 L: 63.5 W: 63.5 Used to provide power to the filament of a vacuum tube. B Battery: Eveready 762-S: 45 V: Threa­ded posts H: 146 L: 104.8 W: 63.5 Used to supply plate voltage in vintage vacuum tube equipment. Origin of the term B+ for plate voltage power supplies.

  4. Chroma (vector database) - Wikipedia

    en.wikipedia.org/wiki/Chroma_(vector_database)

    Chroma or ChromaDB is an open-source vector database tailored to applications with large language models. [1]Its headquarters are in San Francisco.In April 2023, it raised 18 million US dollars as seed funding.

  5. Many-to-many (data model) - Wikipedia

    en.wikipedia.org/wiki/Many-to-many_(data_model)

    For example, think of A as Authors, and B as Books. An Author can write several Books, and a Book can be written by several Authors. In a relational database management system, such relationships are usually implemented by means of an associative table (also known as join table, junction table or cross-reference table), say, AB with two one-to-many relationships A → AB and B → AB.

  6. Associative entity - Wikipedia

    en.wikipedia.org/wiki/Associative_entity

    As mentioned above, associative entities are implemented in a database structure using associative tables, which are tables that can contain references to columns from the same or different database tables within the same database. Concept of a mapping table. An associative (or junction) table maps two or more tables together by referencing the ...

  7. Cross-reference - Wikipedia

    en.wikipedia.org/wiki/Cross-reference

    In programming, "cross-referencing" means the listing of every file name and line number where a given named identifier occurs within the program's source tree. In a relational database management system, a table can have an xref as prefix or suffix to indicate it is a cross-reference table that joins two or more tables together via primary key.

  8. Chroma ATE - Wikipedia

    en.wikipedia.org/wiki/Chroma_ATE

    Chroma ATE Inc. 致茂電子, is a Taiwanese electronic test and measurement instrumentation company founded in 1984. The company develops and manufactures a range of electronic test and measurement equipment, automated testing equipment ( ATE ), signal generator, power supplies, and intelligent manufacturing execution systems ( MES ).

  9. Common external power supply - Wikipedia

    en.wikipedia.org/wiki/Common_external_power_supply

    Common external power supply and the USB Standard-A and Micro-B ends of the detachable cable. The common external power supply (Common EPS) was a European Commission (EC) specification for a universal charger for smartphones sold within the European Union.