A frame or ring of wire or hard paper fitting into the cartridge case used in some shotguns, and holding the shot together when discharged, to secure close shooting; also, a device for slightly narrowing the bore at the muzzle for the same purpose.
Device used in a LAN to combine transmissions from a cluster of clients and/or servers; often called a hub.
a communications device that offers the ability to concentrate many lower-speed channels into and out of one or more high-speed channels.
A communications device that provides communications capability between many low-speed, usually asynchronous channels and one or more high-speed, usually synchronous channels. Usually different speeds, codes, and protocols can be accommodated on the low-speed side. The low-speed channels usually operate in contention requiring buffering. The concentrator may have the capability to be polled by a computer, and may in turn poll terminals. See also: asynchronous, protocol, and synchronous.
An FDDI node that provides attachment points (through M ports) for stations that are not connected directly to the dual ring. The concentrator is the focal point of the dual ring of trees topology.
a communications device that combines signals from multiple sources, such as terminals on a network, into one or more signals before sending them to their destination
a device that concentrates several network connections at a single point
a device that connects a lot of slow connections to one or a few fast connections
Generic term for a device which aggregates network traffic from various similar sources. For example, a LAN concentrator will connect a number of LAN devices at a single point.
A device that allows multiple end-point to share a common transmission facility.
Device that serves as a wiring hub in star-topology network. Sometimes refers to a device containing multiple modules of network equipment.
A device that provides a central connection point for cables from workstations, servers, and peripherals. Most concentrators contain the ability to amplify the electrical signal they receive.
Basically a high-density hub, usually designed to allow for future expansion.
Electronic device used to aggregate several channels or sources into one stream for transmission over one line or link. Opposite of Multiplexer.
Any communications device that allows a shared transmission medium to accommodate more data sources than there are channels currently available within the transmission medium.
A device used to gather data from multiple RFID readers at the same time.
A communications device that allows a shared transmission medium to be used by multiple devices.
An "intelligent" wiring hub with information-processing capability.
A device connected to several RFID readers to gather data from the readers. The concentrator usually performs some filtering and then passes only useful information from the readers on to a host computer.
A device used to divide a data channel into two or more channels of lower average speed, dynamically allocating channel space according to demand in order to maximize throughput.
(1) A network device that "concentrates" or combines multiple slower-speed communication channels into a single, higher-bandwidth channel. (2) A physical layer device connected to several other devices that restores a signal's amplitude and timing for transfer across a LAN. The device is known as a repeater in most IEEE 802.3 standards. A concentrator provides Ethernet, FDDI, and/or token ring connectivity and accepts host, network communications, and network management modules. Also called a hub.
A device that connects a number of circuits that are not all used at once to a smaller group of circuits for economical transmission. A telephone concentrator achieves the reduction with a circuit switching mechanism. In data communications it refers to a multiport repeater or hub that brings together the connections from multiple network nodes. Concentrators have moved past their origins as wire concentration centers and often include bridging, routing, and management devices.
A functional unit that permits a common path to handle more data sources than there are channels currently available within the path. Usually provides communication capability between many low-speed, asynchronous channels and one or more high-speed, synchronous channels. 2) A device that connects a number of circuits, which are not all used at once, to a smaller group of circuits for economy.