Microsoft, the company that defined the PC, is still enormously profitable — but not as profitable as it once was.
This week, Microsoft will try to regroup. It is rolling out the largest upgrade of its Windows software in more than a decade. All of this is meant to help the company break into the exploding market for mobile.
While the company still commands a formidable computing empire, it is now under attack.
Microsoft's CEO is Steve Ballmer, a big, bombastic, balding guy. These days he's riled up about Windows 8.