Yes, it is possible to connect your computer or tablet to your television if you have the appropriate connections or devices. Newer TVs should have an HDMI port, and using an HDMI cable you can connect your computer to your TV. If you have an Apple TV or Google Chromecast, you can use a tablet to stream to your TV.
If you have an Apple TV, Fire TV, or Roku, you can now download the Hoopla app for those devices and stream items borrowed from your Hoopla account.