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Twitter’s user base keeps growing, particularly on mobile devices

Twitter’s mobile user base is large and growing — but not enough to suit investors. The social-networking giant reported increased user growth and usage for its third quarter, as well as a profit for the second straight quarter, but the standout metric was from mobile devices. The company said that 80 percent of users who log in at least once …

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With new graphics chips, ARM grabs at cheaper phones, tablets

CEO Simon Segars wants ARM to grow in mobile graphics. ARM These days, even cheap smartphones and tablets need to handle complex graphics, with people using the devices for mobile gaming and high-resolution video. ARM, which designs the computing chips in nearly every smartphone, hopes to seize on that trend, introducing Monday a new suite of its Mali graphics-chip designs …

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