You probably have upgraded your big old boxy TV set to a flat screen TV.
And when you did that you asked yourself --
What are all those other ports on the back of your new TV?
Today's click through will explain and it might go into more detail than you desire, but at least you will get an idea of what the various connectors do.
HERE'S THE LINK TO Why HDMI isn't always the answer
You can stop at the 6:21 point as the rest of the video is a commercial