Filed in education, from the study of the communication the following summary. 1. before coming to the age of the mobile phone and the PC one at a time. In one era (around the year 2540 (1997).) We communicate through a pager or also called PAC links. The official says that the section is a pager. Rectangular shaped object (first version) to shake every time a message arrives at the machine. When you press the show will find the books listed on the screen, there are a wide variety of brands long. 2. If the communication routes in the past to communicate is important, because the communication and is.Matters relating to the public directly, because the world will need related to the public throughout the world even, both lived in the House, avoiding road Li Yong did not have communications, therefore, we can not escape from the world. Why I say this because the communication is related to sleep, we wake up from until this is good, it can split the sentence, if observed. The second issue is the communication and transportation. both issues are important and need to share them, and must be used efficiently. We can divide the communications paths are as follows: 2.1. the one-way or Simplex (One-way or Simplex) 2.2. the Finance Branch or half-duplex (Half-Duplex) 2.3. regular or full-duplex (Full-Duplex). 3. we can recognize categories of tools of communication are as follows: 3.1 the hub or PC actually (Hub, Repeater) 3.2 switch or bridge (Switch, Bridge). 3.3 to animate (Router). 3.4 gateway (Gateway) 3.5 modem (Modem) 3.6 multi-plex (Multiplexer). 3.7 EVD Te ratoe (Concentrator). 3.8 front-– n FEP FEP (Front-End Processor), processor. 3.9 Izumi finlaysoni (Emulator) 3.10 restart p scooters (Repeater) 3.11 network adapter (Network Adapter) or a LAN adapter. 3.12 signal cable is for connecting computers in the system.
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