Foreign-made devices or even parts are sometimes deliberately infected with spyware and malware, official says.

IBM has made what it claims is the first graphene-based integrated circuit, using many of the same techniques now used to produce silicon circuits. The technique could one day be used to produce superior wireless communication devices and less-expensive displays.

Advanced Micro Devices on Wednesday broke its silence around its tablet strategy, announcing its first low-power chip designed for these devices.

By June, the number of Google Map queries that come from mobile devices will permanently surpass the number of queries coming from desktop computers, Google Vice President Marissa Mayer revealed Wednesday.

Bookseller Barnes & Noble told analysts that it expects to announce on May 24 the launch of a new e-reader device, suggesting that the company may be moving further in its strategy to combine its e-reader with tablet PC functionality.

The chip war will heat up as Advanced Micro Devices prepares PC processors to rival Intel's Sandy Bridge chips, which have already started appearing in laptops, analysts said this week.

Qualcomm on Tuesday said it is stepping up its software efforts as its chips begin supporting more operating systems, including Microsoft's upcoming Windows OS, which will be targeted at mobile devices, tablets and PCs.

Slip-ups by a competitor are usually good for business, but Intel's recent problems with its Sandy Bridge chips won't help Advanced Micro Devices to steal market share from its bigger rival, according to IDC.

Looking into its crystal ball at where trends are leading, Intel hopes to bolster on-chip capabilities to vastly improve the security and functionality of mobile devices like smartphones and tablets.

As businesses increasingly adopt tablets, Intel wants to bring those devices under control by implementing remote management and security capabilities in hardware and software, the company said this week.

Advanced Micro Devices (AMD) on Thursday reported net profit for the fourth quarter that beat forecasts, due mainly to income from a patent license and a legal settlement with Samsung.

Advanced Micro Devices on Monday said that Dirk Meyer has resigned from the post of CEO, and that the company is beginning to search for a new chief executive.

Microsoft CEO Steve Ballmer positioned Windows 7 as an operating system that can drive new and innovative products, as the company tries to fend off competition from tablet computers based on software from Google and Apple.

Sony's long-rumored PlayStation Phone could soon become a reality. The company will launch a device blending the features of a PlayStation Portable and cell phone in the spring of 2011, according to a report in Japan's Asahi Shimbun newspaper on Tuesday.

Retailers in Japan began accepting reservations for Sharp's new Galapagos media tablet on Friday ahead of its launch next week. Sharp hopes to sell a million of the devices and in doing so take the lead in Japan from competitors like Apple's iPad and Amazon's Kindle.

Research In Motion has not agreed to turn over corporate data sent to and from BlackBerry devices to the Indian government, contrary to reports that surfaced on Wednesday, RIM said.

The first commercial electronic paper displays that can show color were unveiled Wednesday at the Flat Panel Display International show in Japan. The screens open the way for electronic book readers like Amazon's Kindle and Sony's Reader to add color, but so far only a single Chinese device maker has committed to the technology.

Advanced Micro Devices on Thursday said it wants to put its chips in tablets, relenting after months of denying any interest in that market.

Advanced Micro Devices on Thursday posted a net loss for the third quarter, but reported a boost in microprocessor and graphics products sales as it inches its way back to profitability.

Microsoft announced the Windows Phone 7 OS for handheld devices on Monday, taking a step forward in the company's efforts to strengthen its position in the still-growing smartphone market. CEO Steve Ballmer unveiled the first phones to run the OS, and named the network operators that will distribute them.