You know many students feel bored while continuously reading a book. Similarly taking a lesson from a class on a whiteboard also becomes boring in some situations, where a marker or a chalk is used to write content for attendees.

On the other hand if you use a large display for studying purpose, the listeners can understand the topic by developing interest. Videos are displayed that help in learning the practical applications.

In such a case, there is a gadget that can make this process very easy and that is a wireless presenter with laser pointer. By using this a lecturer can teach the things staying far away from the screen, and can use the pointer to point towards the display.

There are many examples for this phenomenon. Let's suppose your constructor is telling you about the working of an engine. Now if he teaches in a typical way by making shapes and writing text on the board, it might be hard to get it. And if he uses a multimedia, he can show thing easily in the form of a video from YouTube, from a PowerPoint presentation, or any other digital way.

Note it that if you want to mentor, that will tell how to use a computer. Now if you use refer typical books, it might become a difficult job, as compared with letting him learn and practice on a computer live.

An HDMI cable is used in this scenario, and you can buy one from eCommerce stores and markets shops easily.

There are many big and small that are supplying such accessories.

Institutions can set a specific budget for these like presenters, and other tech items, for facilitating teachers.
Thanks for reading.