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 ...

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 ...

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Add Yahoo as a preferred source to see more of our stories on Google. For almost every PC or Mac user, a keyboard and either a mouse or a trackpad are more than enough to navigate these systems ...