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[technology development-22]: rapid overview of the application and development of network and communication technology-2-communication Technology

2022-07-02 13:30:00 【Silicon based workshop of slow fire rock sugar】

Catalog

Preface ：

The first 4 Chapter The development of communication technology

4.0 What is information

4.1 The way information is delivered

4.2 Mobile communication in ancient times

4.3 Modern mobile communication mode

4.4 The development of modern mobile communication technology

4.5 Development trend of modern mobile communication technology

Preface ：

The Internet ： It is composed of several nodes and link constitute , Represents many objects and their interrelations .

Internet （internet）, Also known as the international network , refer to The Internet A huge network connected with the network , These networks are connected by a common set of protocols , Form a single huge international network logically .

The Internet began 1969 year The United States Of ARPANET . Usually internet The Internet , and Internet Especially the Internet . This will computer network The method of interconnection can be called “ Network interconnection ”, On this basis, the development of a global Internet covering the world is called the Internet , That is, they are interconnected Network structure . The Internet is not the same web , The world wide web is based on Hypertext Interconnected global systems , And it's one of the services that the Internet can provide .

signal communication , It refers to a certain behavior or... Between people or between people and nature medium Information exchange and transmission , In a broad sense, it means that both or more parties who need information adopt any method without violating their own wishes 、 Arbitrary medium , Accurately and securely transfer information from one party to the other

Communications technology , also called Communication engineering （ Also make Information engineering 、 Telecommunication Engineering , Formerly known as telecommunication engineering 、 Weak current engineering ） yes Electronic engineering An important branch of , It is also one of the basic disciplines . This discipline focuses on the process of communication information transmission And the principle and application of signal processing . Communication Engineering Studies , Electromagnetic wave 、 The transmission of information in the form of sound or light waves through electrical pulses , From the sender （ Source ） Transmit to one or more receivers （ Shinjuku ）. Whether the receiver can correctly identify the information , It depends on the loss power in transmission . signal processing It is an important link in Communication Engineering , It includes filtering , Encoding and decoding, etc . Professional courses include fundamentals of computer network 、 Circuit Foundation 、 The principle of communication system 、 Switching technology 、 Wireless technology 、 Computer communication network 、 Communication electronic circuit 、 Digital electronic technology 、 Optical fiber communication .