Recieving real-time data from serial port and plotting in a graph

[kuzulis]

But better use QSerialDevice.
https://gitorious.org/qserialdevice

This project is developing dynamically and provides more than QextSerialPort.
Also available as ready-console and GUI examples (see /examples, /test).

Direct download link:
https://gitorious.org/qserialdevice/...tarball/master