If you Bluetooth enable your laptop with a Bluetooth dongle it essentially establishes a Virtual COM Port.
The advantage with this approach is any legacy application which can utilize a serial COMx port can transmit and receive data from your Nexus Tablet.
In other words the connection will appear on your PC as a COM3, COM4, etc.
For example you can process data collected from the Nexus Tablet on the laptop using software apps like MATLAB.
Another advantage is no cables and the two device can be a reasonable distance apart.
BigDog
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My laptop dosen't have bluetooth. Can I use WiFi for transfering data?
Yes, if both the devices are WiFi enabled, you can certainly establish an adhoc network.
Although, it may not be as straight forward as a peer to peer Bluetooth connection.
Do you have any experience with TCP/IP socket programming?
Worst case you should be able to transfer a file containing data to either device and then process it.
Perhaps if you explain in greater detail your design requirements, the type of data, the PC application, etc, I maybe able to suggest the best course.
BigDog