NEWS COMPUTER NETWORK

Computer network is a series of computer iterconeksi between 2 or more (autonomous) connected by a media liaison with the media or wire transmission without wires wireless). If the computer connected to each other so the user can exchange data melakaukan, shutdown, restart, etc. can be done with a computer. That computer network, especially in the era of media now use tranmisiya already siyal. someone did not bother to pull the cable from one computer to other computers with certain media media


History of computer networks as the human need for communication on, the computer knows when the 1950 growing so molai forming a large super computer, the computer at that time must serve several locations or terminals, at the time called TSS (time sharing system) and it was also formed network (network) computer at the application layer. At TSS several computer systems connected to the Host computer, developing TSS process continues so that the combination of computer technology with informatics tekologi now feeds on itself.

System connection to the science of computer network is divided into two parts namely:
1. Peer to peer
Artiya peer partner / their workers, peer to peer network is a computer rangkaia beerapa usually leuh of 10 with 2 print, is usually dikgunaka in leb, perkatoran, ruamh other illness and other stores, usually the number of computers 10 to 100 units.
Peer to peer is where setipa PC / computer can use resources on other computers or sealiknya, which meant the PC can access here can take / save files on other computers. The term data is used as a PC client / server.

2. Client - server
Network model is usually used in the global system usually applied with Internet technology. In this network, where there is one computer unit to function as a large sepesifikasinya SERVER. Servers here as a service to the client / PCs acsess authorized, by logging in to the destination server. Client bias light is provided using the server resources in accordance with the authority granted by the administrator.
Type of server services:
a. File servers: pegelolaan file
b. Print server: printing files
c. Database server: database of functional processes carried out by these machines in other stasiu can request data.
d. DIP (Document information processing)

Types of computer networks
Type of global network is divided into three namely:
1. Local area network (lan)
2. Metropolitan area network (man)
3. Wide area network (wan)