title: Receiving data from RS232(com)
body: <p>I want to write an app that receive data from RS232(sometimes using usb connector) port using C/C#.</p>
  
  <p>I have searched the web but found nothing. Do u have anything interesting? Articles, tutorials, tips, code snippets, everything is very much appreciated.</p>
  
  <p>I have got transmission protocol, but have no idea how to read data from rs232. 
  Can I read/write data asynchronously? </p>