How about computer communication which is the transfer of digital information produced by a computer?

Computer communication is the transmission of digital information generated by one computer to another computer through a "communication channel". Computer communication is a way of transmitting information between computers or between computers and terminal devices through communication channels (paths for data transmission) in the form of data communication.

#The operating environment of this article: Windows 7 system, Dell G3 computer.

Computer communication is the transmission of digital information generated by one computer to another computer through a "communication channel".

Computer communication is a method of transmitting information between computers or between computers and terminal devices in the form of data communication. It is the product of the integration of modern computer technology and communication technology, and has been widely used in military command automation systems, weapons control systems, information processing systems, decision analysis systems, intelligence retrieval systems, and office automation systems.

The basic principle of computer communication is to convert electrical signals into logical signals. The conversion method is to represent high and low levels as 1 and 0 in binary numbers, and then use different binary sequences to represent all Information. That is to say, the data is represented by the electrical voltage of the bit stream of 0 and 1 in binary, and the generated pulses transmit the data through the medium (communication equipment) to achieve the communication function. This is the physical layer of OSL, that is, communication. working principle.

Communication channel (Channels of communicationl) is the path for data transmission. In computer networks, channels are divided into physical channels and logical channels. The physical channel refers to the physical path used to transmit data signals, which is composed of the transmission medium and related communication equipment; the logical channel refers to the logical path realized by both parties sending and receiving data signals through intermediate nodes on the basis of the physical channel, consisting of This is a logical path formed by transmitting data signals. Logical channels can be connected or connectionless. Physical channels can also be divided into wired channels and wireless channels according to different transmission media, and can also be divided into digital channels and analog channels according to different types of transmitted data.

The communication channel may be composed of one of the following transmission devices or some combination thereof:

• 1. Telephone line;

• 2. Telegraph line;

• 3. Satellite;

• 4. Laser;

• 5. Coaxial cable;

• 6. Microwave;

• 7. Optical fiber.

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