By Dan Gallagher

Tech stocks managed to post mild gains Friday morning despite a small selloff in the semiconductor sector, as National Semiconductor Corp. and Texas Instruments Inc. both declined after issuing updated guidance for their current fiscal quarters.

Other big tech players went south on broker downgrades, including Cisco Systems, Dell Inc. and Adobe Systems.

Nat Semi (NSM) shares fell more than 7% to $11.90 by midday. The chip maker reported a strong increase in first-quarter profit, but issued a forecast for the current period that fell short of Wall Street's estimates.

In a statement, Chief Executive Officer Don Macleod said, "Slower growth in our end markets and distribution channel, along with some likely inventory reduction, will mute the seasonal growth that we would normally see in our business during this time of the year."

Texas Instruments (TXN) was off nearly 1% to $23.64. Late Thursday, the company tightened the range of its earnings and sales forecast.

The Philadelphia Semiconductor Index (SOX) lost more than 2% by midday, while the Nasdaq Composite Index (RIXF) was flat and the Morgan Stanley High Tech 35 Index (MSH) was down 0.7%.

Dell (DELL) slid by 3.5% to $11.95 after the PC maker was downgraded to an underweight rating by Morgan Stanley. Analyst Kathryn Huberty said the move was based on her lower estimates for the PC sector.

"We see potential earnings and valuation multiple pressure for Dell over the next 12-months, due to: 1) slowing PC unit growth resulting from tablet cannibalization and desktop virtualization; 2) tougher enterprise server year-over-year revenue growth compares and increasing low-end competition; and 3) less developed Mobile Internet and Cloud Computing platforms than peers," Huberty wrote in her report.

Another Morgan Stanley analyst -- Adam Holt -- downgraded Adobe (ADBE) to an equal weight, or neutral, rating, citing reduced PC sales forecast and what he described as high expectations for the company's flagship CS5 product.

"We are not changing estimates, but our lower multiple reflects more limited upside potential and the fact that we're now mid-product cycle when multiples typically compress," Holt wrote.

Cisco (CSCO) shares fell by 1.1% to $20.39 after being moved from Top Pick status by RBC Capital Markets. Analyst Mark Sue wrote that "uncertainty related to enterprise network upgrades and the lack of conviction from carrier customers may limit near-term stock appreciation."

Top gainers included Oracle Corp. (ORCL), IBM (IBM) and Amazon.com (AMZN). Hewlett-Packard Co. (HPQ) was down 1.4%.

Microsoft Corp. (MSFT) shares slipped 0.7%. Stephen Elop -- who heads Microsoft's business division -- resigned to take the CEO post at cell-phone giant Nokia Corp. (NOK).

 
 
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