For almost every PC or Mac user, a keyboard and either a mouse or a trackpad are more than enough to navigate these systems without too many problems. In fact, it might be a bit too easy — people are ...

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 ...