Berlin (dpa) — Whether you work on a desktop PC or a laptop, a second screen can often be of help. But before you go and buy a monitor, have you considered using your tablet? This can add extra real estate to your desktop without much effort, especially if you have a larger 14-inch model. It helps if the tablet manufacturer provides support for this. Samsung, for example, has a feature called Second Screen, which allows a connection using cable or wi-fi. Of course it works easiest when the table