title: Where to find SoftwareSerial.h library for arduino?
body: <p>I include <code>SoftwareSerial.h</code> in my code. But when I compile the code, following error occurs: </p>
  
  <pre><code>GPS_TEST_3.ino:2:28: fatal error: SoftwareSerial.h: No such file or directory
  compilation terminated.
  Error compiling
  </code></pre>
  
  <p>Any idea on this? Where the header file is located?</p>