Could anyone help me identify the component in the image?

Couldn't you just select it and do Edit Properties to find out what it is?

It is (most likely) a "noConn" from the basic library. It's used to prevent the schematic checker giving a warning about a floating output (which isn't the end of the earth - the circuit is still correct - it's just to stop warnings being produced when you have an expected floating output, as there is in this case).

Regards,

Andrew.

Thank you.

The schematic isn't mine so I can see it directly. I just saw it on a site. 

I think you are right. I will check it tomorrow. It is midnight here and I can't access the simulator.

By the way, it seems that noConn is only used to get rid of warning from schematic checker. Is there any other function of this compenent or is there a case where we should use the component?

First of all this is nothing to do with "the simulator". It's the schematic editor, not the simulator (sorry for being pedantic).

The noConn is a no-op component. It's ignored for netlisting in all netlisters and the only purpose is to "tie off" floating nets for the schematic checker. I already said that, so not sure why you need me to repeat it. Don't you believe me?

A search for "noConn" in the documentation would lead you to a section "Bypassing checks" - in particular "Bypassing Floating Pin Checks" in the Virtuoso Schematic Editor L User Guide.

Andrew.

Sorry about that. It is not anything relating to believe you or not. 

I was not sure if there is a case where it is necessary except what you said above.