It should be noted at this point the PC will try to open the default serial port which is default is 9600 Baud, No Parity, One Stop bit and No flow control, the number is decided by the lowest number serial available Com1 if fitted. The test program that comes with the serial class provides a very simple example of how to use the serial class. It expects the name of the com port to be passed as a command line parameter. It opens that serial port and communicates at 115200 bps. If a different bitrate is desired, the source code will have to be modified. It should be noted at this point the PC will try to open the default serial port which is default is 9600 Baud, No Parity, One Stop bit and No flow control, the number is decided by the lowest number serial available Com1 if fitted. C# Serial Port Example. For example, the DataBits property defaults to 8, the Parity property defaults to the None enumeration value, the StopBits property defaults to 1, and a default port name of COM1. These must be change according to the user needs, for example the Com port number or baud rate.

1. C# Serial Port Example Code
2. Serial Port Example Qt
3. Com Port Example
4. Csharp Serial Port Example

An asynchronous port on the computer used to connect a serial device to the computer and capable of transmitting one bit at a time. Serial ports are usually identified on IBM compatible computers as COM (communications) ports. For example, a mouse might be connected to COM1 and a modem to COM2. The picture shows the DB9 serial port on the back of a computer.

Where is the serial port on a computer?

Android x64 iso download. The serial port is found on the back of the computer and is part of the motherboard.

With the introduction of USB, FireWire, and other faster solutions serial ports are rarely used when compared to how often they've been used in the past. Also, many new computers and laptops no longer have a serial port.

Identifying a serial port

In the above graphic of a serial port, you can notice the DB9 serial port connection is easy to identify. The connection is in the shape of the letter D, is a male connector, and has 9 pins.

What is the serial port used for?

Below is a listing of various hardware components that can be purchased and used with your serial port.

Mouse - One of the most commonly used devices for serial ports, usually used with computers with no PS/2 or USB ports and specialty mice.
Modem - Another commonly used device for serial ports. Used commonly with older computers, however, is also commonly used for its ease of use.
Network - One of the original uses of the serial port, which allowed two computers to connect together and allow large files to be transferred between the two.
Printer - Today, this not a commonly used device for serial ports. However, was frequently used with older printers and plotters.

C# Serial Port Example Code

Serial port pin information

Below is a listing of each of the pins located on the DB9 connector, their purpose, and signal name. As can be seen in the above picture pin one is in the top left and pin 9 is in the bottom right.

Serial Port Example Qt

Com Port Example

Most of today's computers are eliminating the serial port in favor of USB ports.

Related serial port pages

Csharp Serial Port Example

Com port, Connection, Hardware terms, Motherboard terms, Parallel port, Port, RS-232, Serial