Three ways of data communication: 1. Simplex communication, which only supports data transmission in one direction; 2. Half-duplex communication, which allows data to be transmitted in both directions, but at the same time, only Allows data to be transmitted in one direction; 3. Full-duplex communication allows data to be transmitted in two directions at the same time, that is, both parties to the communication can send and receive data at the same time.
#The operating environment of this article: Windows 7 system, Dell G3 computer.
Data communication is a new communication method produced by the combination of communication technology and computer technology. To transmit information between two places, there must be a transmission channel. Depending on the transmission media, there are wired data communications and wireless data communications. But they all connect data terminals and computers through transmission channels, allowing data terminals in different locations to share software, hardware and information resources.
Three ways of data communication:
The information transmitted in the computer network is digital data. The communication between computers is the data communication method. The data communication is the computer Communication method combined with communication lines.
According to the allowed transmission direction, data communication methods can be divided into three methods: simplex communication, half-duplex communication, and duplex communication.
According to the transmission direction of data on the line, communication methods can be divided into: simplex communication, half-duplex communication and full-duplex communication.
Simplex communicationOnly supports data transmission in one direction, also known as one-way communication. For example, radio broadcasting and television broadcasting are simplex communications.
Half-duplex communicationAllows data to be transmitted in both directions, but at the same time, only allows data to be transmitted in one direction. It is actually a A simplex communication with switchable direction. That is, both parties to the communication can send information, but both parties cannot send it at the same time (and of course they cannot receive it at the same time). This method is generally used in non-backbone lines of computer networks.
Full-duplex communicationAllows data to be transmitted in two directions at the same time, also known as two-way simultaneous communication, that is, both parties to the communication can send and receive data at the same time. For example, modern telephone communications provide full-duplex transmission. This communication method is mainly used for communication between computers.
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