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Western Digital Corp posted lower third-quarter results as higher sales of tablet devices led to lower demand for its hard disk drive from PC makers, and forecast fourth-quarter adjusted profit below Wall Street view.

Johnson & Johnson reported stronger-than-expected quarterly earnings, fueled by higher prescription drug sales and stabilizing performance of its consumer products business that has been plagued by recalls.

The companies whose shares are moving in pre-market trade on Tuesday are: El Paso Corp, Johnson & Johnson, Dell, Emerson Electric, State Street, Harley-Davidson, Texas Instruments and Omnicom Group.

The Supreme Court hears the Microsoft v. i4i patent case today, and a ruling for Microsoft could alter decades of patent law.

A new study shows that most of the energy a computer ever uses is in the manufacturing process rather than when it s being used.

PlayBook carries RIM's hopes that the device will vault it over Android and Apple's iPad, to position it as a tablet of choice. However, RIM's answer to Apple's iPad and Motorola Xoom and hundreds of other tablets comes in bit late.

U.S. startup Fusion-io, backed by computing pioneers Steve Wozniak and Michael Dell, says it can outwit computer-storage incumbents like EMC which have too much invested in old technology.

Dell is opening up a new research and development facility in Santa Clara, Calif.

The F-word is here to haunt Google again since a survey published by Fortune stated that 56 percent of Android developers found that the Android fragmentation was a meaningful but huge problem.

Apple's iPad 2 topped the charts among the 10 most-promising tablet computers, according to ConsumerReports.

The top pre-market NASDAQ Stock Market gainers are: Cephalon, Netlist, Achillion Pharmaceuticals, ClickSoftware Technologies, and Glu Mobile. The top pre-market NASDAQ Stock Market losers are: China Information Technology, Golar LNG, Tibco Software, EDAP TMS, Vodafone Group, and Dell.

The companies whose shares are moving in pre-market trade on Wednesday are: Gilead Sciences, Philip Morris International, Range Resources, NYSE Euronext, eBay, Chesapeake Energy, Kohl's Corp and Dell.

ThinkEquity lowered its profit estimate of Nvidia Corp. citing lower PC graphics growth.

Dell, the world's second-biggest computer maker, has not seen any material disruption to electronics supply chains as a result of the Japanese earthquake of two weeks ago, a senior executive said.

Tablet thinness factor, a new parameter to judge the tablets, was introduced by Apple earlier this month when it launched its ultra thin tablet iPad 2.

Adobe Systems Inc posted first-quarter profit above Wall Street estimates, but the world's biggest maker of design software cut its second-quarter revenue outlook by $50 million, citing uncertain business environment in Japan following the earthquake.

Dell Inc's annual revenue in India is nearing $2 billion and the world's No. 2 maker of personal computers plans to add more staff in the country, its chief executive said.

AT&T plans to acquire Deutsche Telekom AG's T-Mobile USA for $39 billion in cash and stock, a deal which will alter the telecom landscape in US leaving only three key players in the market.

Mosaid Technologies Inc filed a suit against several technology companies, including Intel Inc, Dell Inc and Research in Motion, for what it called patents violations of its Wi-Fi technology.

Apple has managed to significantly cut the thickness and weight of iPad 2 by trimming the dimensions of several key components, most notably the battery, according to a new report by IHS iSuppli.

After a year in which Johnson & Johnson's product quality control was deemed such a shambles that the U.S. government will oversee some plants, the board had praise for Chief Executive William Weldon and awarded him almost $29 million in overall compensation.

(Corrects month of Goggins departure in paragraph 12)

In a closely-watched patent case before the Supreme Court, i4i has fired a brief at Microsoft saying that the latter wants to overturn a century of precedent in patent law.

Léo Apotheker, the Chief Executive Officer of PC giant Hewlett-Packard (NYSE: HPQ), is expected to hold an investor briefing on March 14 in San Francisco where he may unveil his much anticipated vision for HP.

Sales of Apple's iPad ate in to Acer's netbook shipments, giving Dell and edge of the Taiwanese company.

Highly rated smartphones iPhone 4 and BlackBerry Torch 9800 bit dust at the Pwn2Own hacking competition while Samsung Nexus S, which runs on Android, and the Dell Venue, which runs on Windows Phone 7, came away unscathed.

Atrix has features that compare well to an Apple iPad 2.

Apple unveiled its lighter, thinner and faster rendition of iPad, the iPad 2 with upgrades sufficient enough to give a tough fight to the current breed of Android, webOS and QNX-based tablets.

RBC Capital Markets estimates that tablets may ultimately cannibalize around 15 percent of the total PC market through 2014, which while material, doesn't deter the PC markets from seeing sustained growth over the next 5-years.