By Rex Crum

Tech stocks mostly rose Thursday, with Adobe Systems Inc. standing out as the software company got a big boost following Apple Inc.'s announcement that it will lift many restrictions on applications used to write programs for Apple iPhone App Store.

Adobe (ADBE) rose $3.55 a share, or 12%, to close at $32.86 after Apple (AAPL) said it would lift some restrictions on third-party software tools that would translate program codes. The move means that developers who use Adobe's Flash programming language will now be able to convert their programs into App Store applications that can then run on the iPhone, iPad or iPod touch.

Apple also said it will publish the guidelines it uses to approve what programs can be sold in its App Store. The company had received many complaints from developers about the previously secret rules Apple used to determine what apps it would accept.

Apple shares rose 15 cents to $263.07.

Among other tech stocks, gains came from Oracle Corp. (ORCL), Micron Technology Inc. (MU), Google Inc. (GOOG), Hewlett-Packard Co. (HPQ) and Microsoft Corp. (MSFT).

Texas Instruments Inc. (TXN) rose 16 cents a share to close at $23.84 ahead of a mid-quarter update from the semiconductor company.

The Nasdaq Composite Index (RIXF) rose 7 points to 2,236. The Philadelphia Semiconductor Index (SOX) and the Morgan Stanley High Tech 35 Index (MSH) also posted small gains.

The sector also rose along with the broad market following a somewhat upbeat report on first-time claims for state unemployment benefits. The Labor Department said that during the week of Sept. 4, the number of first-time claims fell by 27,000, to 451,000, their lowest level since July.

 
 
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