Network expert of industrial IOT
sales@usriot.com
PUSR Cloud Official Website
PUSR Cloud Official Website
Leave Message

*

*

*

*

*

*

*

Consult now

Technical Support

Industry News
Industry News
Industry News
Home/News/Industry News
Home/News/Industry News

What is the Difference between Serial Port and Parallel port?

What is the Difference between Serial Port and Parallel port?

2020-12-25

2020-12-25
Share TO:

What is the Difference between Serial Port and Parallel port?

A serial port is used to connect serial lines for serial communication. 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. 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. 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.

Compared 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. The figure of the pin connector for DB-9 is shown below.

Unlike a serial port, a parallel port can move a set of 8 bits on eight different lines at once. That's why it's faster than serial communication. 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. However, this is unrealistic. 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.

Parallel ports are usually implemented in ZIP drives, printers, hard drives, CD-ROM drives, and so on. The figure of the pin connector for DB-25 is shown below.

 

A comparison of the differences between the serial and parallel port

 

Number

Serial ports

Parallel ports

1

Serial ports are used to implement serial transmission.

While parallel ports are used to implement parallel transmission.

2

Compared withaparallel ports, the transmission speed of serial ports is relatively low.

The transmission speed of parallel ports is higher than that of serial ports.

3

In serial port communication, a small number of wires are used.

In parallel port communication, more wires are used than serial ports.

4

A serial port can transfer a single data stream.

At the same time, a parallel port can transfer multiple data streams.

5

The serial port sends data over and over again.

Parallel ports send more than one bit at a time.

6

In serial ports, male ports are involved.

In parallel ports, female ports are involved。

7

Serial ports are usually implemented in modems, connecting devices, controllers, mice, and security cameras.

Parallel ports are usually implemented in ZIP drives, printers, hard drives, CD-ROM drives and so on.

Comment

Name*
Email*
Country*
Corporate name
Comment content*