Science Fair Project Encyclopedia
A socket generally designates a cavity or region used for fitting and connecting some specific device.
In electronics, a socket is also used as a synonym for a jack.
An electrical socket is a synonym of electrical outlet: an electrical device connected to a power source onto which another device can be plugged or screwed in. Typical examples are wall sockets and light bulb sockets. See Domestic AC power plugs & sockets.
- Eye sockets or orbits are regions in the skull where the eyes are positioned.
- When a tooth is pulled, if the hole becomes painful as a result of the blood not clotting so as to keep it moist until it heals, the opening is referred to as a dry socket.
In the world of computers, there are two types of sockets- Internet sockets, and IPC sockets.
Sockets can also be used for IPC, without IP addresses or any other staples of TCP/IP.
The BSD operating system introduced network sockets in 1983: see the Berkeley sockets API. Each socket gets bound to a given port, which lets the transport layer protocol (typically UDP or TCP) identify which application to send the data to.
Unix domain sockets, IPC sockets
Another type of socket is used by POSIX compliant systems, and are called Unix domain sockets (the correct standard POSIX term is POSIX Local IPC Sockets). Their primary function is as a means for inter-process communication and are therefore also called IPC sockets. These connections are from the local computer to itself, not actually a connection transmitted over a physical network.
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