The Function Keys (F1 to F12) on the Windows keyboard have specifically assigned roles. For example, F1 opens the help page of any application you’re currently on. This is useful in many situations.

On some computers, the function keys -- the 12 "F" keys at the top of the keyboard -- have built-in secondary functions, like changing speaker volume or monitor brightness. Using the function keys for ...

There are different ways to change the screen brightness, but the easiest way is to use the function keys. PCs of different brands have different function keys to control screen brightness. In this ...