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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]
A banana connector (commonly banana plug for the male, banana jack (or socket) for the female) is a single-wire (one conductor) electrical connector used for joining wires to equipment. The term 4 mm connector is also used, especially in Europe, although not all banana connectors will mate with 4 mm parts, and 2 mm banana connectors exist.
For example, telephone cables in the UK typically have a BS 6312 (UK standard) plug at the wall end and a 6P4C or 6P2C modular connector at the telephone end: this latter may be wired as per the RJ11 standard (with pins 3 and 4), or it may be wired with pins 2 and 5, as a straight-through cable from the BT plug (which uses pins 2 and 5 for the ...
An adaptor (in the context of plugs and sockets) is defined in IEC 60050 as "a portable accessory constructed as an integral unit incorporating both a plug portion and one or more socket-outlet portions". (There is an alternative spelling, 'adapter', but adaptor is the form usually used in standards and official documents.)
Two Israeli plugs and one socket. The left plug is the old standard; the one on the right is the 1989 revision. Israeli socket polarity, with wire color coding. The plug defined in SI 32 is used only in Israel, including the Gaza Strip and the West Bank. There are two versions: an older one with flat pins, and a newer one with round pins. [38]
A connector in a fixed location is a "jack", and a moveable connector is a "plug". [9] [11] The distinction is relative, so a portable radio is considered stationary compared to the cable from the headphones; the radio has a jack, and the headphone cable has a plug. Where the relationship is equal, such as when two flexible cables are connected ...
The BNC connector is used for analog composite video and digital video interconnects on commercial video devices. Consumer electronics devices with RCA connector jacks can be used with BNC-only commercial video equipment by inserting an adapter. BNC connectors were commonly used on 10base2 thin Ethernet network cables and network cards. BNC ...
William Jardine and James Matheson, the firm's founders 1846 view of Jardine's original building from Causeway Bay, Hong Kong.. The firm of Jardine, Matheson & Company emerged in 1832 from an evolving process of partnership changes in the trading business Cox & Reid, a partnership established in 1782 between John Cox and John Reid, the latter having been agent of the Austrian trading company ...