Parallel ports are usually implemented in ZIP drives, printers, hard drives, CD-ROM drives, and so on. For this reason, in parallel communication, transmission lines are preferred to be short. Therefore, for this reason, in parallel communication, transmission lines are preferred to be short. Unlike a serial port, it uses a 25-pin connector called a DB-25 connector. To eliminate crosstalk and errors, all bit streams need to transmit data at the same speed in parallel communication. That's why it's faster than serial communication. Unlike a serial port, a parallel port can move a set of 8 bits on eight different lines at once. The figure of the pin connector for DB-9 is shown below. In serial communication obtained over a single wire, only a single data stream is transmitted from one end to the other. Therefore, data speed mismatch is not a problem in serial transmission, as in parallel transmission. The length of the wire can be increased as needed.Ĭompared with a parallel port, the transmission speed of a serial port is relatively low. Serial ports are usually implemented in modems, connecting devices, controllers, mice, and security cameras.

These output serial ports can be used to connect 9-pin D-type connectors which are connected to transmission lines, known as DB-9 connectors. Common serial port communication methods, such as serial to Ethernet converters, can transparently transfer serial port data to Ethernet devices to achieve the wired network transmission of data. What is the Difference between Serial Port and Parallel port?Ī serial port is used to connect serial lines for serial communication.

Serial vs parallel printer ports