Serial ports, also known as serial data interfaces, are communication interfaces for transmitting data in a serial manner, where data bits are transferred one after the other over a single channel.

​ With the rapid advancement of technology, industrial robots have become an indispensable part of modern manufacturing. They not only replace human labor in performing high-intensity, repetitive tasks but also significantly enhance production efficiency and ensure product quality. In this process, the embedded core board serves as the "brain" of the industrial robot, playing a crucial role in its operation.

Walkie-talkies are well-known devices that allow communication without any network support or phone charges, providing great convenience in our lives. The typical walkie-talkie consists of an antenna, host unit, battery, and charger.

Two of the most widely used standards in serial communication are RS485 and RS232. Both have distinct advantages and applications, but they differ significantly in terms of wiring, communication methods, and use cases.

With the rapid advancement of information technology, data transmission plays a crucial role in modern communication systems. In the process of data transmission, baud rate and bit rate are two frequently mentioned terms.