Friday 9 December 2011

Info:Computer network

Computer Network is a group of devices, known as nodes, associated with the media liaison. Node may consist of computers, printers or other devices that send and receive data generated by other nodes in the network. Media liaison, also known as a medium of communication.

The first network is about the end of the 1960s and the early 1970s, the ARPANET was built by ARPA for the Ministry of Defense. Today, there are various types of networks, including local area network (LAN) and wide area network (WAN). The largest network in the world is the Internet.

development
Network starting with a small building, with about ten computer connection and a printer. The technology that exists at that time to limit the number of connected computers and communication cable length may be allowed in the network. In the early nineties communications cable can be pulled as far as about 600 feet to the extension of approximately 30 computers only. Such networks suitable for a small organization known as local area network (LAN). LAN usually connects devices in an office or a building. A LAN can be constructed only with two computers and one printer only, or can be extended in a building by inserting audio and video software. LAN size is limited to a distance of several kilometers. LAN has a data rate of 4 Mbps to 100 Mbps.Perhubungan network users from different countries has established the development of LANs to wide area network (WAN). WAN can transmit data, audio and video over long distances to cover a country or continent or world.

Here are some of the advantages of computer networks:
-Sharing of Information
-Hardware Resource-Sharing
-Sharing Source Software
-The Star-electronic (E-Mail) 
-Safety Data
-support



Computer_Network
Computer Network

computer, LAN, network

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