What is the primary function of a smartphone?

Which device is used to amplify sound for hearing?

What does a router do?

What technology does Wi-Fi use?

Amateur radio with a broadband frequency ranges from ____ to ____.

What is the primary function of a modem?

What is the primary function of a modem?

LCD TV work on the principle of ____

What is the primary function of a speaker?

Which device is commonly used for displaying presentations?