What Does Serial Port Mean?
A serial port is an interface that allows a PC to transmit or receive data one bit at a time. It is one of the oldest types of interfaces and at one time was commonly used to connect printers and external modems to a PC. Modern serial ports are used in scientific instruments, shop till systems such as cash registers and applications like industrial machinery systems.
Techopedia Explains Serial Port
Normally, a serial port is a male port, while a parallel port is a female port. System resource configurations are chosen for each port and are identified by COM1, COM2, COM3, COM4, and so forth. Each COM position represents an input/output (I/O) and an interrupt request (IRQ) address. The I/O address transfers and receives data to and from a peripheral device such as a mouse or keyboard.
