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  2. Modular connector - Wikipedia

    en.wikipedia.org/wiki/Modular_connector

    The first types of small modular telephone connectors were created by AT&T in the mid-1960s for the plug-in handset and line cords of the Trimline telephone. [1] Driven by demand for multiple sets in residences with various lengths of cords, the Bell System introduced customer-connectable part kits and telephones, sold through PhoneCenter stores in the early 1970s. [2]

  3. Trimline telephone - Wikipedia

    en.wikipedia.org/wiki/Trimline_telephone

    A 220 Trimline rotary desk phone, showing the innovative rotary dial with moving fingerstop Early Touch Tone Trimline with round buttons and clear plastic backplate and round non-modular handset cord Redesigned touch-tone desk model Trimline, manufactured on January 9, 1985 The Trimline 2225, one of the last phones made at the Indianapolis Works in 1986 Early foreign made Trimline, December ...

  4. Telephone jack and plug - Wikipedia

    en.wikipedia.org/wiki/Telephone_jack_and_plug

    The standards for telephone jacks and plugs vary from country to country, though the 6P2C style modular plug has become by far the most common type. A connection standard, such as RJ11 , specifies not only the physical aspects of an electrical connector , but also the signal definitions for each contact, and the pinout of the device, i.e. the ...

  5. Keystone module - Wikipedia

    en.wikipedia.org/wiki/Keystone_module

    A keystone module for a CAT5 network cable A 3-port keystone wall plate. A keystone module is a standardized snap-in package for mounting a variety of low-voltage electrical jacks or optical connectors into a keystone wall plate, face plate, surface-mount box, or a patch panel.

  6. List of generic and genericized trademarks - Wikipedia

    en.wikipedia.org/wiki/List_of_generic_and...

    In the United States and Canada, "styrofoam" is often used as a generic term for disposable foam cups, plates, coolers and packing material, although these are made from a different polystyrene product than true Styrofoam Brand Foam, [211] which is made for thermal insulation and craft applications. [212] Tannoy: Public-address (PA) system ...

  7. Power supply - Wikipedia

    en.wikipedia.org/wiki/Power_supply

    An external power supply, AC adapter or power brick, is a power supply located in the load's AC power cord that plugs into a wall outlet; a wall wart is an external supply integrated with the outlet plug itself. These are popular in consumer electronics because of their safety; the hazardous 120 or 240 volt main current is transformed down to a ...

  8. Storage Module Device - Wikipedia

    en.wikipedia.org/wiki/Storage_Module_Device

    The CDC 9762 80 MB variant has 5 × 14" platters. The top and bottom platters are guard platters and not used for storage. The top and bottom guard platters are exactly the same size as the data platters, and are usually made from a data platter which had too many errors to be usable as a data platter.

  9. Battery holder - Wikipedia

    en.wikipedia.org/wiki/Battery_holder

    By the 1920s, battery holders used twin metal clips (like fuse holders) to hold the battery in place while making electrical contact. Patent no. 1439429 was granted in Dec. 1922 for an assembly with two spring arm clips, a small switch, and a lamp assembly on the end of connected wires.

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