A Harvard University dropout who ushered in the home computer age and made billions of dollars along the way will have his last official day of work at Microsoft on June 27.  (Xinhua/Reuters file Photo) Photo Gallery>>>

    BEIJING, June 23 -- A Harvard University dropout who ushered in the home computer age and made billions of dollars along the way will have his last official day of work at Microsoft on June 27.

    Three people will essentially fill the void left behind when Bill Gates retires from the company he and friend Paul Allen co-founded in 1975.

    Since Gate's began his transition from leading Microsoft to heading his personally-bankrolled charity, The Bill and Melinda Gates Foundation , his job as chief software architect has been handled by Ray Ozzie.

    Craig Mundie inherited Gate's chief research and strategy officer duties, while former Harvard classmate Steve Ballmer became chief executive officer at the Seattle-based software colossus.

    Gates left Harvard after two years to found the firm that became global powerhouse Microsoft. He later received honorary degrees from Harvard and other universities.

    After retiring, Gates will remain chairman of the Microsoft board of directors and its largest shareholder.

    Analysts say there are signs that Microsoft has been struggling since Gates stepped away from managing operations several years ago.

    Microsoft has "missed a number of opportunities" and the Windows and Office software on which its fortune is built have stumbled.

    Microsoft's Windows Vista operating system released in January of 2007 has flopped with customers, many of whom are clinging to its predecessor Windows XP.

Bill Gates (L), Chairman of Microsoft Corporation, and his wife Melinda gesture for the rest of their family to join them for a photograph following the 356th Commencement Exercises at Harvard University in Cambridge, Massachusetts June 7, 2007.  (Xinhua/Reuters Photo) Photo Gallery>>>

    The software giant also sees its bottom line threatened by Google, which offers free online programs that compete with Office and other packaged software sold by Microsoft.

    Microsoft failed in a recent bid to buy Yahoo for nearly 50 billion dollars in order to combine online resources to better battle Google in the Internet search and advertising market.

    Microsoft's server and tools division is its most profitable unit. It's entertainment unit, which sells Xbox videogame consoles and gaming software, has yet to make a profit.

    (Source: CRIENGLISH. com/ Agencies)