Photo taken on Dec. 25 shows workers of China Datang Corporation install a 200-megawatt wind power unit in Yumen City in northwestern China's Gansu Province.
Smartphones were the tech story of 2009
Considering the time and expense involved, the biggest story in technology this year could have been the largely successful transition to digital television that wrapped up in June. But 2009's most significant tech developments took place on much smaller screens.
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