A Serial Port (also called Serial Port) is a term commonly used in computing. A Port is the interface (physical and functional connection between two devices or systems) that enables the sending of digital information and in turn also allows it to be received. A port can be both physical and virtual. The physical ports have an input in the hardware for a peripheral to be connected, and the virtual ports are a logical interface managed by a computer program.
And in this case it is called Serial Port because the information flow is directed in a straight line of communication, that is, the data is transmitted bit by bit, sending a single bit at a time (serially) although one of its characteristics it is to be bidirectional which allows it to both receive and send data, otherwise it occurs in the Parallel Ports where bits are sent and received simultaneously.
Through a Serial Port you can connect two electronic devices (generally computing) by using a cable, usually so that there is a connection between the keyboard, the mouse or a Router with the computer. In a common computer there are usually from one to four Serial Ports. Series Ports typically contain from nine pins to twenty-five.
Although Serial Ports have been in the world of computers for more than twenty years, they have tried to be replaced (by working more slowly) by Parallel Ports, and currently by USB ports.
