| 单词 | local area network | |||
| 释义 | local area networklocal area networklocal area networklocal area network
local area networklocal area network(LAN), a computer networknetwork,in computing, two or more computers connected for the purpose of routing, managing, and storing rapidly changing data. A local area network (LAN), which is restricted by distances of up to one mile, and a metropolitan area network (MAN), which is restricted to distances ..... Click the link for more information. dedicated to sharing data among several single-user workstations or personal computerspersonal computer (PC), small but powerful computer primarily used in an office or home without the need to be connected to a larger computer. PCs evolved after the development of the microprocessor made possible the hobby-computer movement of the late 1970s, when some computers ..... Click the link for more information. , each of which is called a node. A LAN can have from two to several hundred such nodes, each separated by distances of several feet to as much as a mile, and should be distinguished from connections among computers over public carriers, such as telephone circuits, that are used for other purposes. Because of the relatively small areas involved, the nodes in a LAN can be connected by special high-data-rate cables. A metropolitan area network (MAN) is defined as being restricted to a larger area (maximum distances of 50–60 miles) than a LAN but one still small enough so that dedicated links (such as microwave links) can be used. See also modemmodem [modulator/demodulator], an external device or internal electronic circuitry used to transmit and receive digital data over a communications line normally used for analog signals. ..... Click the link for more information. . BibliographySee W. Stallings, Local and Metropolitan Area Networks (1993); M. N. O. Sadiku, Metropolitan Area Networks (1995). local area network(networking)Because the network is known to cover only a small area,optimisations can be made in the network signal protocols thatpermit data rates up to 100Mb/s. See also token ring, wide area network, metropolitan area network.. Usenet newsgroup: news:comp.dcom.lans.misc. local area networklocal area network (LAN)a network of PERSONAL COMPUTERS used to undertake routine data processing functions in a business. Over the years these networks have become more complex and to this extent a ‘system crash’ or failure can be highly disruptive and expensive. Old-style PC networks were device-sharing facilities giving people access to a departmental printer or fax. If they went down, people could still carry on working. In modern networks, however, people use PCs to log on to the network for all their software, including word processing and databases, and to access information held on software in other departments. See INFORMATION MANAGEMENT.local area network (LAN)a network of computers within an organization, connected by cable or radio signals, to facilitate internal communications. Local area networks can, in turn, be interconnected through the INTERNET.local area network
Synonyms for local area network
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local area network - a local computer network for communication between computers; especially a network connecting computers and word processors and other electronic office equipment to create a communication system between offices