The function keys, or F keys, on a computer keyboard serve as a line of shortcut keys that invoke various actions and commands in software applications. Located across the top of the keyboard, labeled ...

Close-up of the F9, F10, F11, and F12 function keys on a keyboard - Professor25/Getty Images For almost every PC or Mac user, a keyboard and either a mouse or a trackpad are more than enough to ...

This is kind of a last-ditch look for help... my F1 through F10 keys have mysteriously stopped working on my 12" rev. A PowerBook! Intermittently they'll "turn on," but the problem has gotten worse ...