In the 1950s when the type of computer to swell start the creation of super computer, a computer must serve several terminals. (See Figure 1.4) To found the concept of the distribution process, based on the time known by the name of TSS (Time Sharing System), and for the first time terbentuklah network (network) in the computer application layer. In some TSS system terminals connected to a host computer. In the process of TSS begin looking mix of computer technology and telecommunication technology, which initially developed its own. In 1957 Advanced Research Projects Agency (ARPA) was established by the Department of Defense (DoD), USA, 1967 design from the early ARPANET was published and 1969 DoD undertake the development of ARPANET with the research to a number of computer network so that the organic form (the program is known by the name ARPANET).
Furthermore, when computer prices have already started a small decrease and the concept of the distribution process is done, then the use of computers and networks have started a variety, from the start to handle the process together and communication between computers (Peer to Peer System) without a computer through the control center. To start developing the local network technology, known as a LAN. Similarly, when the Internet started to be introduced, most LANs are self-start related to one another, to the network Cyclopian terbentuklah WAN.
Furthermore, when computer prices have already started a small decrease and the concept of the distribution process is done, then the use of computers and networks have started a variety, from the start to handle the process together and communication between computers (Peer to Peer System) without a computer through the control center. To start developing the local network technology, known as a LAN. Similarly, when the Internet started to be introduced, most LANs are self-start related to one another, to the network Cyclopian terbentuklah WAN.