What is the biggest difference between the earliest computer network and the traditional communication network?

First of all, the composition of the two is different:

1. Composition of computer networks: The classification of computer networks, like the general classification method of things, can be classified according to different characteristics of things (that is, the attributes of things). Generally speaking, a computer network is formed by physically (or logically) connecting multiple computers (or other computer network devices) through transmission media and software.

Generally speaking, the composition of computer network basically includes four parts: computer, network operating system, transmission medium (which can be tangible or intangible, such as the transmission medium of wireless network is space) and corresponding application software.

2. Composition of communication network: The traditional communication network (namely telephone switching network) consists of three parts: transmission, switching and terminal. Transmission is the medium to transmit information; Exchange mainly refers to the switch, which is the intermediary for various terminals to exchange information; Terminals refer to telephones, mobile phones, fax machines, computers, etc. used by users.

Second, their roles are different:

1. Functions of computer network: data communication, resource sharing, centralized management, distributed processing and load balancing.

2. The function of communication network: to realize the link of information exchange between people, people and computers, so as to achieve the purpose of resource sharing and exchange.

Third, the overview of the two is different:

1. Overview of computer network: Computer network refers to a computer system that connects multiple computers with independent functions and their external devices located in different geographical locations through communication lines, and realizes resource sharing and information transmission under the management and coordination of network operating system, network management software and network communication protocol.

2. Overview of communication network: Communication is the exchange and transmission of information between people through a certain medium. A network is a data link that connects isolated workstations or hosts with physical links.

Baidu encyclopedia-exchange network

Baidu encyclopedia-traditional communication

Baidu Encyclopedia-Computer Network (a system connecting distributed computers to realize information transmission)