HDTV and secondary monitor setup

[Beed]

Is it possible to get my late 2009 27" Imac to display a secondary monitor and a HDTV?

 

[simsaladimbamba]

Do you want to use THE iMac as secondary display or TV or do you want to connect a secondary display or TV to the iMac?

If it is the latter:

How to: Connect an Mac to a TV

Most common video interfaces on external computer displays and TVs

Common video interfaces on Macs and the appropriate adapters to connect to other display devices

Most common audio interfaces on external computer displays, TVs and the Mac​

 

[SR20DETDOG]

Do you want to use THE iMac as secondary display or TV or do you want to connect a secondary display or TV to the iMac?

I think (s)he's asking if it's possible to having a second display as well as a TV connected to the iMac at the same time.

As far as I know only the 2011 27" iMacs can run multiple extra displays standard, whereas the 2009 model cannot due to having only one MDP?, but I could be wrong.

 

[simsaladimbamba]

I think (s)he's asking if it's possible to having a second display as well as a TV connected to the iMac at the same time.

Ah, that makes more sense now. Must have been to tired to fully decipher the OP.

As far as I know only the 2011 27" iMacs can run multiple extra displays standard, whereas the 2009 model cannot due to having only one MDP?, but I could be wrong.

One could use Matrox DualHead2Go or some USB to VGA adapter for that, but dual display via MDP is not supported like with 2011 Macs.