Maximum PC: Microsoft this week announced record quarterly revenue of $21.45 billion for the three-month period ended December 31, 2012. Redmond's Windows Division posted revenue of $5.88 billion, up 24 percent from one year prior, though on a pro forma basis that number slides to 11 percent after factoring in net deferral of revenue for the Windows Upgrade Offer and the recognition of the previously deferred revenue from Windows 8 pre-sales.
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