Part of an early model central processing unit is seen on display at the Computer History Museum on January 19, 2024 in Mountain View, California, as the museum celebrates Mac's 40th birthday.  Forty years after igniting a PC revolution, Apple's Mac is stronger than ever and could reach new glory due to AI computing - or be left behind.  (Photo by Loren Elliott  /  AFP)

Apple's Mac turns 40: How it transformed mass-market computing