The serial port is a kind of interface. The purpose is very clear in the title, which is “communication”. Just like calling, sending QQ, and sending WeChat, the sending method is also very similar. Whatever data is sent by the sender, the receiver will receive the data.micro bluetooth module This is called transparent transmission, or “transparent transmission” for short. The difference is that calling and sending WeChat is a behavior between people, while serial communication is a behavior between machines.
The official explanation of serial port communication is: the communication method of sending and receiving bytes by the serial port bit by bit. It can be used for many purposes, such as connecting shopping mall access control, printers or medical equipment, and it can also be connected to industrial instruments. For the improvement of drive and connection, programmable bluetooth module the transmission length or speed of RS-232 in practical applications often exceeds the standard value.