Dan Moren, writing over at Macworld:
Forty years. In the world of technology, where many devices seem to evaporate after only a matter of months, lasting for a decade is an accomplishment—but four of them? It’s nearly unheard of.
And yet today marks the 40th anniversary of the Macintosh. While it has certainly seen its ups and downs over the intervening years, it’s a device that has nevertheless been in constant production since the day Apple co-founder Steve Jobs first took the wraps off it back in 1984.
In that time, it’s run on four different processor architectures and two major operating systems, making it a bit of a computer of Theseus. It’s seen challengers rise and fall, and been threatened with extinction more than once, and yet for all of that has emerged in recent years revitalized and stronger than ever.