Virtual serial port is usually realized by software simulation, and serial communication interface can be easily created, configured and used without additional hardware equipment. In addition, the virtual serial port can also provide some additional functions, such as data encryption, checksum and error detection. However, the anti-interference ability of virtual serial port may be limited, because virtual serial port usually has no hardware filtering or signal conditioning circuit, and is easily affected by electromagnetic interference and signal noise.
Real serial port is usually implemented based on hardware. Using special serial communication controller or chip can provide more reliable communication performance and stronger anti-interference ability. Because the real serial port adopts hardware filtering or signal conditioning circuit, it can better resist electromagnetic interference and signal noise. In addition, the real serial port can also support higher communication rate and longer communication distance.
Therefore, the real serial port may be more suitable for scenes that need high reliability and strong anti-interference ability, such as industrial control, communication and other fields. In these scenarios, it is necessary to ensure the accuracy and stability of data and the high reliability of communication, so it is necessary to use a real serial port.