See Apple's pivotal product announcements through history

It’s difficult to overstate how much the iPhone has changed the world. — AP

Apple has a long history of designing products that aren't the first to be introduced in a particular category but still redefine the market. With the company unveiling a headset equipped with virtual and augmented reality technology already available in other devices, here is a look back at some of Apple's other breakthrough products:

The Macintosh computer, unveiled January 1984