history of the network

1. History of the lalau Network

The concept of computer network was born in the 1940s in America of a development project in Model I computer at Bell labs and research group led by Harvard University professor H. Aiken. At first the project was to use a computer devices should be used together. To do some process without wasting lots of free time made ​​the process of succession (Batch Processing), so that multiple programs can run in a computer with the rules antrian.Ditahun 1950s when the type of computer begins to enlarge until the creation of a super computer, a computer must serve some terminals. For it is found the concept of time-based distribution process known as TSS (Time Sharing System), then for the first time the form of networks (network) applied computer. In the TSS system several terminals are connected in series to a host computer. TSS now appears in the fusion of computer technology and telecommunications technology that was originally developed on their own. Entering the 1970's, after the workload increase and the price of the computer devices began to seem very expensive, then start to use the concept of the distribution process (Distributed Processing). Furthermore when the small computer prices have started to decline and the distribution process concept has matured, the use of computers and networks have started a variety of start dealing with the process and communication between computers (Peer to Peer System) alone without going through a central computer. To start developing the local network technology known as LAN. Similarly, when the Internet was introduced, the majority of stand-alone LAN started connecting and forming a giant network WAN.

2. Ethernet

Ethernet is a network system that is created and patented the company Xerox. Ethernet is an implementation method of CSMA / CD (Carrier Sense Multiple Access with Collision Detection) that was developed in 1960 at ALOHA wireless project at the University of Hawaii over coaxial cable. Standardization of Ethernet systems made since 1978 by the IEEE. (See Table 2.) The speed of data transmission on ethernet to date is 10 to 100 Mbps. When the market in general there is a high-speed 10 Mbps Ethernet commonly called 10BASE series. There are many different types of 10Base are: 10Base5, 10Base2, 10BaseT, and 10Base-F which will be explained further later. In the method of CSMA / CD, a host computer that sends the data to the network first of all ensure that the network is not used for transfer from the host computer and other. If at this stage of checks found another transmission and a collision (collision), then the host computer is required to repeat the request (request) delivery on the next time interval is performed in random order (random). Thus, the effective network can be used interchangeably. To determine the position where a host computer is located, then each given an ethernet device (address) along the 48 bit unique (only one in the world). Address information is stored in a chip that typically appears during the computer start the sequence numbers in base 16 ..... 48 bit numbers are grouped for easy to understand each 8 bit to menyetakan Base 16 number, as above (00 40 05 61 20 e6), a 3 digit code in front of the chip maker. Chips are being made by ANI Communications Inc. Examples of well known vendors can be seen in Table 3, and further information can be obtained in http://standards.ieee.org/regauth/oui/index.html. Based ehternet address, then any communication protocol (TCP / IP, IPX, AppleTalk, etc..) Attempted to use the information for each host computer dijaringan.