Announcements of last quarter performance are on its way from all major IT companies and now it was time for Microsoft. Beating all expectations company a record fourth-quarter revenue of $16.04 billion for the quarter ended June 30. With a profit of $0.51 per share, financial figures are a 22% increase from the same period of the prior year.

Microsoft says that Revenue growth has been majorly driven by the sale of Windows 7 OS which has sold 175 Million license till date. Peter Klein, CFO, said “This quarter’s record revenue reflects the breadth of our offerings and our continued product momentum. The revenue growth, combined with our ongoing cost discipline, helped us achieve another quarter of margin expansion.”

Windows 7 was released nine months ago today, on October 22, 2009. The OS originally released to manufacturing one year ago. Microsoft announced that Windows 7 is the fastest selling operating system in history, selling over 175 million licenses to date. The company is projected to sell 300 million by the end of 2010.

Windows 7 has also driven an uptake of 64-bit computing. According to ChangeBASE research, conducted with senior IT decision makers, more than 65% of businesses hoped to migrated to Windows 7 within 12 months of its release. Over 50% of those migrating will be choosing the 64-bit route. Microsoft confirmed earlier this month, that nearly half of all Windows 7 PCs run 64-bit versions.

Currently company is busy with its first service pack of Windows 7 which is scheduled to be release in first quarter of next year. Beta version is already been distributed to various developers and volunteers who are currently testifying the performance of windows 7 and Sp1 together.