What is an advantage of serial ports over parallel ports?

An advantage of serial ports over parallel ports is that serial ports can send data over longer distances. This is primarily due to the way data transmission is handled. Serial communication sends data one bit at a time over a single channel, which minimizes signal degradation and electromagnetic interference that can occur over long distances. In contrast, parallel ports transmit multiple bits simultaneously across multiple channels, which can lead to issues such as signal crosstalk and increased attenuation, making them less reliable over longer distances. This makes serial ports especially useful for connecting devices that need to operate at distances greater than those typically supported by parallel interfaces.