* Microsoft to invest in B&N's digital, college units
* Deal values businesses at $1.7 bln
* Microsoft will own 17.6 pct of new business
* Barnes & Noble shares up 79 pct; Microsoft up 0.7 pct
(Adds details, bullet points)
April 30 Microsoft Corp (MSFT.O) will invest $300 million in Barnes & Noble Inc's (BKS.N) digital and college businesses, valuing them at $1.7 billion. Shares of Barnes & Noble jumped 79 percent.
Microsoft will get a 17.6 percent stake in the new unit, while Barnes & Noble will own about 82.4 percent, the companies said in a statement on Monday.
The business, whose name has not yet been decided, will have an ongoing relationship with Barnes & Noble's retail stores.
Barnes & Noble, the No. 1 U.S. bookstore chain, said in January that it might spin off its digital business, which includes its Nook e-reader. [ID:nL1E80401F] The companies will introduce an application for the Nook on Windows 8, t he upcoming version of Microsoft's operating system.
Barnes & Noble is investing heavily to develop its popular Nook devices and the e-books sales they generate as readers move away from traditional books.
Barnes & Noble and Microsoft have settled their patent litigation, the companies said.
Shares of Barnes & Noble were up 79 percent at $24.50 in premarket trading. The company was valued at just above $823 million at Friday's close.
Microsoft shares rose 0.7 percent to $32.19.
(Reporting by Mihir Dalal in Bangalore; Editing by Joyjeet Das)
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