Explain the usage of Set-Top Box (STB) and Multi-purpose entertainment devices.

Set-Top Box (STB) It is an electronic device that generally contains a tuner card and connects to a television set as an external source of signal, turning the source signal into a content form that can be displayed on the television screen or other display device. It is also known as Set-Top Unit (STU). It is a device that enables a television set to become a user interface to the Internet.

 Multi-Purpose Entertainment Devices These devices are used to play videos, listening to music and radio, play video games and much more through a single device, e.g. iPad, iPod, Tablets, PCs, X-Box gaming console etc.