Connecting a tablet PC to a TV is very simple. Most of the android tablets being sold have an HDMI output port on them. The connectors are in different sizes, and I don't believe any of the tablets are coming with the HDMI cable included.Go to the page of the manufacturer of your device, and the cable will be listed.
You can only connect a tablet PC to a HD TV that has a HDMI input port. Once you connect the cable between your tablet and the TV, you will need to change the source on the TV to the HDMI input port that you used (most HD TVs have multiple HDMI input ports). Everything you see on your tablet will appear on the TV. You do not need to do anything to the tablet to make the picture show on the TV.