Chromebook laptops can connect to a TV or an external monitor.
The following link provides the latest information from Google on how to use this feature: Connect your Chromebook to a Monitor
The following are examples of external video ports that are available on Chromebooks. These ports differ from each model, but more information can be found in the Chromebook User Guides.
Dell Chromebook 3100:
Figure 1 - Left Side
Figure 2 - Right Side
Dell Chromebook 3110:
Figure 3 - Left Side
Figure 4 - Right Side