In fact, many such TVs come with an HDMI (High-Definition Multimedia Interface) port which connects to the HDMI port on your satellite or fibre TV set top box, a DVI (Digital Visual Interface) port perhaps and quite often, also with a VGA (Video Graphics Array) port found on almost all desktop PCs and on many notebook PCs. All you need do is to switch the input on your TV to either the HDMI or VGA port to which your PC is connected. On some TV remote controls, you press the "Source" button and select the input.
One of my friends connected his Hisense large screen LED TV to his compact desktop PC (under the TV stand), which in turn is connected to his Unifi fibre-Internet router and he controls the PC using a wireless keyboard and mouse.
Thus the TV can be used to play You Tube, Vimeo and other streaming videos, listen to online streaming radio, podcasts, etc. in any language from around the world, it can play downloaded video and music files as well as view photos on your hard disk, send and receive e-mail, access social media such as Facebook, Twitter, Skype, etc., all from your couch and who knows, you may even end up writing letters, creating spreadsheets and presentation graphic presentations all from your couch.
You can also install the open source Kodi (formerly XBMC) media available for Linux, Mac OS, Windows, etc. and turn your Into -- well a media centre.
http://kodi.tv/download/
And when you're done with running the PC, you can always switch your TV back to your satellite or fibre TV provider.
At first, he was running Windows on the PC and I found it's response rather sluggish and advised him to install a Linux on instead and after trying out a few Linux distributions, he settled on Pearl Linux with a MATE user interface.
