Absrtact: This paper will define the two concepts of serial port communication and serial port transmission in detail, and analyze the differences and connections between them.By understanding these two concepts, readers will be better able to choose the communication method that suits their application needs.
1. Definition of serial port communication
Serial Communication is a kind of communication mode that transmits data through serial interface.In computer science, serial port usually refers to RS-232, RS-422, RS-485 and other standard interfaces.The characteristic of serial communication is that the data is transmitted in sequence one by one, which is suitable for low-speed and long-distance data transmission scenarios.
Serial communication usually involves two devices: a sending device and a receiving device.The sending device sends the data to the receiving device through the serial port according to a specific format (such as data bits, stop bits, check bits, etc.).The receiving device parses the received data in the same format.
2. Definition of serial port transparent transmission
Serial Pass-Through is a special way of serial communication.In that serial port transparent transmission mode, data are directly transmit from the input end of the serial port to the output end of the serial port,Without requiring any protocol processing or data conversion during transmission.In other words, the serial port transparent transmission realizes the "transparent" transmission of data between the serial port and the device.
The feature of serial transmission lies in its simplicity and efficiency.Because there is no need for additional data processing, serial port transmission can transmit data quickly.And errors and delays in data transmission are reduced.
3. How to distinguish between serial communication and serial transmission
To distinguish between serial communication and serial transmission, the key is to understand their differences in data processing.
· In serial communication, data may be processed or converted in some form during transmission.For example, the data may need to be encapsulated, decapsulated, validated, transformed, and so on.These processes increase the complexity and latency of data transmission.
· In serial port transparent transmission, data is directly transmitted from the input end to the output end without any additional processing or conversion.This "transparent" transmission allows data to be transmitted at the fastest possible speed,And errors and delays in data transmission are reduced.
In addition, serial port communication and serial port transmission can also be distinguished according to application scenarios.Generally speaking, serial communication is more suitable for scenarios requiring complex data processing and conversion.Such as sensor data acquisition, equipment control and so on.Serial port transmission is more suitable for scenarios requiring fast and efficient data transmission, such as data transmission, file transmission and so on.
Serial communication and serial transmission are two different ways of serial data transmission.Serial communication requires additional data processing and conversion, which is suitable for scenes requiring complex data processing;The serial transmission realizes the "transparent" transmission of data, which is suitable for the scene that needs fast and efficient transmission of data.
In practical application, the appropriate communication mode should be selected according to the specific needs.If complex data processing or conversion is required, serial communication should be selected;If you only need to transmit data quickly and efficiently, you should choose serial transparent transmission.
